The Electron Transport Chain

The Electron Transport Chain In the electron transport chain, electrons flow downward in energy from coenzyme NADH and flavoprotein FADH2 to the terminal electron acceptor, molecular oxygen, O2. Electrons move spontaneously from carriers of lower reduction potential (Eo) to carriers of higher reduction potential. Molecules involved in the ETC have reduction potentials between the values for NAD+/NADH couples and oxygen/H2O couples. Energy extracted from the transfer of electrons is most efficiently conserved when it is released in a step wise fashion, and is accomplished with four distinct protein complexes in the mitochondrial membrane: Complex I = NADH-coenzyme Q reductase (NADH dedhydrogenase) Complex II = succinate-conenzyme Q reductase (succinate dehydrogenase) Complex III = coenzyme Q-cytochrome c reductase Complex IV = cytochrome c oxidase Complex I oxidizes NADH and reduces coenzyme Q (UQ), transferring a pair of electrons from NADH to UQ. The oxidation of one NADH and reduction of UQ results in a net transport of protons from the matrix side to the intermembrane space. Complex II oxidizes succinate and reduces UQ, yielding a net reduction potential of +0.029 V, which does not contribute to the transport of protons across the inner mitochondrial membrane. Complex III facilitates the transfer of electrons from UQ to cytochrome c (cyto c) via the Q cycle, which oxidizes UQH2 and reduces cyto c, releasing four protons into the intermembrane space for every two electrons that pass through the Q cycle. Complex IV accepts electrons from cyto c and reduces oxygen to form H2O, driving proton transport across the inner mitochondrial membrane into the intermembrance space. For every four electrons used to reduce oxygen, four protons are released into the intermembrance space. Components of the ETC are arranged in line with the flow of electrons from donors with lower affinity for electrons toward acceptors with higher affinity for electrons. Affinity for electrons is measured by the reduction potential. The transfer of electrons does not occur in a simple linear sequence. Electrons can enter the ETC at different entry points, either through Complex I or Complex II, and then the pathways converge at Complex III. As Fig. 1 shows, electrons move from more negative to more positive reduction potentials on the energy scale. Table 13-7 presents the following reduction potentials for reactions that occur in the ETC: NAD+ + 2H+ 2e- Æ’Â   NADH + H+ ΔEo = -0.320 V FAD + 2H+ +2e- Æ’Â   FADH2 ΔEo = -0.219 V Fumarate + 2H+ + 2e- Æ’Â   Succinate ΔEo = +0.031 V Q + 2H+ + 2e- Æ’Â   QH2 ΔEo = +0.045 V cyt c1(Fe3+) + e- Æ’Â   cyt c1(Fe2+) ΔEo = +0.220 V cyt c(Fe3+) + e- Æ’Â   cyt c(Fe2+) ΔEo = +0.254 V Â ½ O2 + 2H+ + 2e- Æ’Â   H2O ΔEo = +0.816 V As mentioned, molecules involved in the ETC have reduction potentials between the values for NAD+/NADH couples and oxygen/H2O couples. Electrons move from more negative to more positive reductions potentials in the following order: NADH Æ’Â   Q Æ’Â   cytochrome c1 Æ’Â   cytochrome c Æ’Â   O2 Reactions that have positive reduction potentials have negative free energy and are energetically favorable. Complex III has a more positive reduction potential than Complex I and II, and Complex IV has a more positive reduction potential than Complex III. The reduction potential for each complex can be estimated with the half reactions and reduction potentials provided in Table 13-7. Below are the net equations for each complex: Complex I NADH + 5H+N + Q ↔ NAD+ + QH2 + 4H+P Complex II Succinate + Q ↔ fumarate + QH2 Complex III QH2 + 2 cyt c1 + 2H+N ↔ Q + 2 cyt c1 + 4 H+P Complex IV 4 cyt c + 8 H+N + O2 ↔ 4 cyt c + 4 H+P + 2 H2O For example: Complex I NADH + 5H+N + Q ↔ NAD+ + QH2 + 4H+P NAD+ + 2H+ 2e- Æ’Â   NADH + H+ ΔEo = -0.320 V Q + 2H+ + 2e- Æ’Â   QH2 ΔEo = +0.045 V ΔEo = Eoacceptor Eodonor ΔEo = 0.045 (-0.320) = +0.365 V Complex III QH2 + 2 cyt c1 + 2H+N ↔ Q + 2 cyt c1 + 4 H+P Q + 2H+ + 2e- Æ’Â   QH2 ΔEo = +0.045 V cyt c1(Fe3+) + e- Æ’Â   cyt c1(Fe2+) ΔEo = +0.220 V ΔEo = [2 x 0.220] 0.045 = +0.395 V The reduction potential for Complex III is greater than that of Complex I, correlating to flow of electrons in the ETC. Electrons move from more negative to more positive reductions potentials. In addition, both overall reactions for NADH/FADH2 to O2 are positive values, another indication that electrons moving from Complex I/II to Complex IV is energetically favorable. The calculations are provided below. This is the overall reaction for electrons that travel from NADH to O2 NADH + H+ + Â ½ O2 Æ’Â   NAD+ + H2O NAD+ + 2H+ 2e- Æ’Â   NADH + H+ ΔEo = -0.320 V Â ½ O2 + 2H+ + 2e- Æ’Â   H2O ΔEo = + 0.816 V ΔEo = 0.816 (-0.320) = +1.136 V This is the overall reaction for electrons that travel from FADH2 to O2 FADH2 + Â ½ O2 Æ’Â   FAD + H2O FAD + 2H+ +2e- Æ’Â   FADH2 ΔEo = 0.219 V Â ½ O2 + 2H+ + 2e- Æ’Â   H2O ΔEo = + 0.816 V ΔEo = 0.816 (-0.219) = +1.035 V As a result of the ETC, the net reaction for the transfer of two electrons from NADH through the respiratory chain to molecular oxygen is highly exergonic (positive reduction potentials and negative free energy). For each pair of electrons transferred to O2, four protons are pumped out of the matrix into the intermembrane space by Complex I, four by Complex III and two by Complex IV, producing a proton gradient that drives ATP synthesis (Fig.2).

Mrs Morel, and How She Ruined Lives in Sons and Lovers Essay

Gertrude Morel, a mother whose possessive love for her sons hinders their ability to establish fulfilling relationships with other women, and her detest of her husband closes him out of their lives. Gertrude can not bear to see her children live the life that her husband Walter does so she makes sure that they detest him, especially William and Paul. Mrs Morel did ruin three lives in this novel, Walter’s, William’s, and Paul’s. Walter was a simple miner with simple needs and no motivation or want to advance, when he and Gertrude first met he had thick flowing black hair and a full beard and he also laughed a lot suggesting a happy, relaxed figure. He also portrayed himself as bold and a senior in the mines making a good stable wage, owning his own house and everything in it as well. Gertrude finds her self strangely attracted, despite being described as â€Å"opposite† to her new found love. They rush into marriage but the lust that they had soon fades as the lies that were told are uncovered. Gertrude starts to despise the man she married because he lied to her and goes and spends the money he makes on alcohol instead of on his family. When William is born Gertrude smothers him in love and tries her hardest to keep him away from her husband which makes Walter jealous and angry with her that he can not have the same connection with the child that she does. Gertrude does this with all the children that she and Walter have. The eldest boys are so enveloped by their mother that they can not hold a stable relationship when they grow older because their mother wants to keep them for herself, â€Å"..William and Paul Morel are unable to love when they come to manhood, because their dominant mother holds them back, so that a split occurs between body and soul – their sweethearts getting the former; their mother getting the latter; while the boys themselves are shattered; inwardly in the course of the struggle.† (Spilka, 51) William is the first born son and so he in the one that Gertrude idolizes, he is perfect to her and she wants him to be her little boy forever. When he grows older William soon gets a job in London and moves away leaving his mother and family behind. William send his mother a letter telling her about his new job and his new found girl-friend whom he will be engaged to. William and his betrothed come to visit his family at Christmas, they seem less than impressed with her and her lifestyle especially Gertrude because she treats his family as though they are somehow inferior to her. This does not discourage William to stop loving her. William becomes sick of her when they return to see his family on a vacation, his mother has the same feelings toward her, but he refuses to call off the marriage seeing how far they had come. Later in the year William dies of pneumonia with his mother by his side. Paul is a less important to his mother until William dies, then he becomes her favourite. Paul is more frail than his brother was, and he is very artistic rather than athletic. As Paul grows in sight of his mother her love for him grows stronger because of his stature, and he grows in a way that he cares of what other people feel, especially his mother. He develops an Oedipus Complex towards his mother. â€Å"Oedipus complex makes mother a lover of her son. During childhood it seems normal and acceptable but it is abnormal and almost absurd, when he grows up, to keep such feelings. He will surely have no real love for a woman and no marriage in his life and is doomed to have a tragic ending with his love affairs and to suffer spiritually the rest of his life when his mother is gone.† (Wang) When Paul is older he starts a relationship with a woman named Miriam who wants him to love her as she loves him, she wants his soul, for him to love her with every ounce of his being as she does. Gertrude see’s this and feels threatened by her because Paul’s soul should belong to her, she believes Miriam can have him physical but not spiritually. Gertrude confronts her son about this matter and Paul tells her that he does not love Miriam, that he loves only his mother and no one else. When Paul breaks things of with Miriam and starts a relationship with Clara, Gertrude is content with them together because Clara is only interested in a physical relationship. When the relationship with Clara fades Miriam tries her luck with Paul again, she says that she wants to marry him but Paul is so fixated with his love for his mother that when he feels the slightest feelings for Miriam he feels as though he is betraying her. He declines the proposal from Miriam and goes back to his mother. Gertrude Morel was a strong woman and mother but stubborn with her children in a way that she would want them to only look to her and not to walter, no matter what the situation was. Throughout the novel Gertrude ruins three lives, that of her her husbands, and her two eldest sons. Her husband Walter was not the best man for her but he did try to be a father to his children, but his wife made it almost impossible for him to do so. He is ostracized from the family throughout the novel, his life is ruined because Gertrude made him loose the only family he had before he had a chance of being a part of it. Her eldest son and first born child William, is so fixated on his mothers approval that he learns to hate the woman that he will be married to, that marriage would become like his parents. In that way Williams life is ruined by his own mother. Her third child and second son Paul can not have a stable relationship with women because he loves his mother too much, his life is ruined because once his mother is gone he is left with nothing and still can not hold a relationship together. References Spilka, Mark. â€Å"Counterfeit Loves† Twentieth Century Interpretations of Sons and Lovers. A Collection of Critical Essays Ed.Judith Farr, Prentice-Hall, INC., Englewood Cliffs, New Jersey: 1970. 51-63. Print. Wang, Yi . â€Å"Should I Use Underlining or Italics?† College of Foreign Languages, Hebei University, China . ,29 March 2001. Web. 21 November 2012. .

Child Development Case Study - 1973 Words

From the video observation, the two three-year old children, Thomas and Riley set off on a bus journey along with their childminder; it is observed that both the children speak about their journey, in which they are able to identify various features, which include the passengers; various buildings and different types of buses. Both children observe many of the features by taking photographs to highlight what they have observed on their journey. From observation, the video looks at the way the childminder plans the experience from a child-initiated stance, which directs the children’s learning in addition with assisting them with role-play and symbolic play, which is shown towards the end of the video. Thus, this essay will focus on the†¦show more content†¦Additionally, Bruner (1986) suggests that children develop differently at equivalent stages however, agreeing with Piaget’s cognitive perspective; egocentrism may constituent towards child development, depend ing on the individual child’s cognitive process. Furthermore, Bruner indicates that both nurture and nature is a crucial part of development, which is promoted and enhanced through socialization, provided that â€Å"the child’s growing knowledge of the world is achieved principally by direct encounters with it in interacting and negotiating with others† (Bruner, 1986, p.61). 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Howard Zinn s The Vietnam War - 1446 Words

Howard Zinn says it best when he writes that â€Å"from 1964 to 1972, the wealthiest and most powerful nation in the history of the world made a maximum military effort, with everything short of atomic bombs, to defeat a nationalist revolutionary movement in a tiny peasant country – and failed† (Zinn, 460). Zinn does not mince words when expressing his thoughts about the Vietnam War, because as Zinn says, Vietnam was basically a modern portrayal of David vs. Goliath. One could even go as far as to say that Vietnam was in essence a case of mass genocide in Vietnam. Thousands and thousands of Vietnamese and America soldiers were killed along with thousands upon thousands of innocent, Vietnamese citizens. War is an infectious disease and the Vietnam War is a perfect example of how deadly of a disease war can be. Everybody involved in the Vietnam War was affected, whether it was Vietnamese citizens, Vietnamese soldiers, American soldiers, or even American citizens back home . The disease that was the Vietnam War infected the hearts and minds of two countries half way across the world from each other. To get some context the Vietnam War was part of a series of wars known as the Indochina Wars. The Vietnam War was preceded by the first Indochina War around fifteen years earlier. The first Indochina War was a fight for freedom between the Vietnamese (Viet Minh) and the Japanese/French. France had previously occupied Vietnam and Vietnam was known as French Indochina. The Viet Minh wereShow MoreRelatedLosing Vietnam On The Home Front1672 Words   |  7 Pages Losing Vietnam on the Home-front Forty six years have passed since the United States officially stopped their involvement in Vietnam. Not since the Civil war had the country been so torn. Every American family was impacted, losing husbands, sons, and daughters. Over fifty thousand Americans were killed and many more still suffer deep physical and emotional scars . Veterans took their own lives, were treated as social outcasts, or ended up on the streets with the homeless. The Vietnam conflictRead MoreExploring Howard Zinns Life 1575 Words   |  6 PagesThis paper explores Howard Zinn’s life as an influential historian and public intellectual. It argues for his critical, singular position as an academic who left a mark on generations of Americans as well as international persons by guiding us all to critically view various institutions and structures of power, particularly in the realm of government. By looking at four major aspects of his life, as radical historian, civil rights crusader, anti-war activist , and labor rights activist, the paperRead MoreAnalysis Of Howard Zinn s Indians History Of The Us And Larry Schweikart s, Patriots1516 Words   |  7 PagesHistory 2112 Critical Analysis Paper #1 Dr. Pitts James Hamby Monday-Wednesday 8:30pm Patriot’s vs. People’s Howard Zinn’s, Peoples’ History of the US and Larry Schweikart’s, Patriots’ History of the US are two analytical views on history that most people would consider politically conflicting. Zinn’s Marxist book was widely praised by liberal activist and Schweikart’s book is greatly publicized by conservatives like Rush Limbaugh and Glenn Beck. 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The Seven Sins Of Memory - 752 Words

The seven sins of memory are transience, absentmindedness, blocking, memory misattribution, suggestibility, bias, and persistence. These are all considered failures of memory. Daniel Schacter, who was the chair of Harvard University’s psychology department, taught these rules. The first being, Transience, transience is having an experience pass through our memory quickly. This is related to short term memory because it not last long nor stick with us. For example, having a short and meaningless conversation with acquaintance will usually not stay with us for a long time. The next sin is Absentmindedness. Absentmindedness is a lack of attention given, which causes the memory to fail. This can come from attempting to multi-task or having ADD or ADHD. These cause people to become distracted while something else is going on. Prospective memory is a major key in absentmindedness because you are thinking about the past or future and not focusing on the present. Blocking is another one of the seven sins which most people experience in their life and it is not as severe. Blocking is the inability to remember information when are trying to recall it. Most people refer to this as a â€Å"Tip of the Tongue Experience†. The tip of the tongue experience is an expression used when a memory cannot be remembered, but you are very close to doing so. For example, trying to remember something very little like a name of someone you met in the past. Blocking and Tip of the Tongue ExperienceShow MoreRelatedExamples Of Seven Sins Of Memory724 Words   |  3 PagesMemory is a very important and beneficial for us as we go through our lives but it can also let us down. There are seven memory sins according to Schacter’s Seven Sins of Memory which are: †¢ Transience †¢ Absent-mindedness †¢ Blocking †¢ Misattribution †¢ Suggestibility †¢ Bias So let us get started by talking about transience which is the decreasing accessibility of memory over time. Being able to remember information over time is affected by age as is all things that happen with our body. As we ageRead MoreFactors Affecting Memory Accuracy Essay977 Words   |  4 PagesMemory is the process of encoding, storing and retrieving information in the brain. It plays an import role in our daily life. Without memory, we cannot reserve past experience, learn new things and plan for the future. Human memory is usually analogous to computer memory. While unlike computer memory, human memory is a cognitive system. It does not encode and store everything correctly as we want. As suggested by Zimbardo, Johnson and Weber (2006), human memory takes information and selectivelyRead MoreSymbolism In The Masque Of The Red Death766 Words   |  4 PagesThe Masque of the Red Death Poe often gives memory the power to keep the dead alive. Which in the short story Poe distorts the aspect of death. By creating a memory as the trigger that reawakens death Poe reveals the theme of the story; that no matter the persons social class death comes for us all. In Edgar Allan Poe’s short story â€Å"The Masque of the Red Death† he uses literary elements such as allusion, symbolism, and allegory to convey that death is inevitable. In the short story, Poe usesRead MoreCharlie And The Chocolate Factory Allusions1308 Words   |  6 Pageschocolate during boarding school would be the most influential factor in his writing of Charlie and the Chocolate Factory. Quentin Blake, the chief editor of Dahl’s official website, writes â€Å"Pupils at Repton were invited to trial chocolate bars, a memory that stayed with Dahl throughout his life, inspiring Charlie and the Chocolate Factory† (Blake). Dahl and his fellow students gorged upon chocolate and other candies, giving the future author an undying love for the craft and would eventually inspireRead MoreThe Mass Essay620 Words   |  3 Pagesand Blood, to the Father, just as Jesus offered Himself to the Father on the Cross. In an unbloody way, we repeat-make present-Christs death and Resurrection. Through this memorial of Jesus, we offer God our praise, sorrow for our sins, and deepest thanks. The Mass is also a meal. At the Consecration, the bread and wine, through the power of the Holy Spirit, become the Body and Blood of Christ. Not a mere symbol, but Jesus real flesh and real blood, under the appearanceRead MoreChristianity, Islam, Hinduism And Buddhism1206 Words   |  5 PagesIntroduction On earth, there are seven continents, one hundred ninety-six countries and a population of seven billion one hundred twenty-five million. What makes everyone stand out is their religion and culture. 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They are a symbol of sloth from the seven deadlyRead MoreFaustus Greatest Sin Is His Misuse Of The Supernatural Powers1202 Words   |  5 PagesTo what extent do you think that Faustus’ greatest sin is his misuse of the supernatural powers given to him by Mephistopheles? Primarily, it could be argued that in actual fact Faustus’ greatest sin is his misuse of the supernatural powers, a recurring theme throughout the play. One scene which particularly captures Faustus’ blatant misuse is Act 3 Scene 2. In this scene, which Faustus plays practical jokes on the fictitious Pope Adrian, there is an obvious shift from his original aim of betteringRead MoreNathaniel Hawthorne s The Scarlet Letter1187 Words   |  5 PagesPuritanism in Red Nathaniel Hawthorne’s The Scarlet Letter shows the early view of Puritanism by concentrating on sin, guilt, and its effects on society. 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Burns Free Essays

The skin, an important organ that acts as a natural cover and holds our many underlying components together, important in multiple functions, yet it can be so easily marred. Burns, one of the reasons for skin damage, are the destruction of the different layers within the skin by exposure to excessive heat; heat that is greater than 120 degrees Fahrenheit, or by friction, electricity or chemical substances. The heat from the exposure cannot be distributed fast enough in the rest of the body, resulting in a breakdown of tissues exposed to heat. We will write a custom essay sample on Burns or any similar topic only for you Order Now Unlike other tissue damages, burns can cover a wider range of surface area. The causes may come from a variety of events such as boiling liquid, exposure to harmful chemicals, or electrical shock. Signs that indicate a burn may be swelling, redness of the area of damage, and pain. Burns are categorized by degree based on the duration, size and severity of injury; the least severe being first degree burns, second degree burns and the worst, third degree burns. Not only are there the regular, common burns that would first come to mind, but there are also chemical burns and electrical burns. Chemical burns occur when the skin is exposed to a corrosive substance that consists of either a strong base or acid. Electrical burns are cause by contact with electric conducting objects that are live. Types of treatment are determined by the severity and also determine the place to which the person should receive the treatment. Regeneration of the damaged tissue will differ accordingly to the type of burn. First degree burn, it refers to the superficial damage to the skin and causes only local inflammation. The inflammation consists of pain, a small amount of swelling, dryness and redness. Peeling, of the area affected, may be seen. This type of burn will only have an effect on the epidermis. Examples of first degree burns include sunburns, flash burns or any other burn that derives from a brief exposure to severe heat. Treatment for this type of burn depends on the location, cause, extent of the burn and may include cold compresses, skin soothing ointments or pain relieving aspirin. The skin usually heals within a time span of a few days without permanent tissue damage. Second degree burns affect the epidermis and the superficial dermis layer of the skin. The burn is often characterized by moist blisters, skin lesions, and bits of shredded epidermis. Also, the injury is often displayed as white. The area of damage is prone to high risks of infection and victim experiences intense pain around the area. In a lot of cases, second degree burns are the consequences of exposure to flames, scald inducing events and contact with chemicals, electricity or hot objects. The treatments for second degree burns depend of the same characteristic of first degree burns. Second degree burns include the addition of extra care to prevent infections. The skin heals within about 3 weeks and 6 weeks if the wound is superficial or deep, as the skin re-epithelializes. At the end of healing, there is minimal scarring to no scarring at all although discoloration of the area may be present. A third degree burn, also referred to as a full thickness burn, destroys the epidermis, the entire dermis beneath it, injures the subcutaneous tissue, and may spread to the muscles. Accessory structures are destroyed. The area of the wound may appear white and leathery due to the damages done to the blood vessels and nerves. The affected skin may also appear black, yellow, or even brown and is painless due to the impairment of vessels and nerves. The skin loses its elasticity, becomes dry and produces the appearance of being charred. Some of the causes of third degree burns may include scalding liquids, flames, chemical substances, over-exposure to excess heat or even electricity. If not taken into serious account with medical attention, the damaged skin will heal poorly and slowly. Since the epidermis and hair follicles are eliminated, new skin will not form. Treatments for these burns consist of procedures such as attentive care and cleaning, skin grafting, anti-biotic mediation and as such. The smaller areas will take fewer months to heal than the larger areas since those require grafting, which is the replacement of the previous damaged skin with transplant skin through surgery. ttp://www. webmd. com/skin-problems-and-treatments/third-degree-burn-full-thickness-burn http://www. medicinenet. com/burns/page2. htm http://faculty. stcc. edu/AandP/AP/AP1pages/Units1to4/skin/repairof. htm http://www. urmc. rochester. edu/encyclopedia/content. aspx? ContentTypeID=90ContentID=P01760 http://www. chw. org/display/PPF/DocID/21911/router. asp http://www. metrohealth. org/body. cfm? id=1014oTopID=1007 http://www. rayur. com/skin-burn-anatomy-definition-causes-symptoms- and-treatment. html How to cite Burns, Papers Burns Free Essays The skin, an important organ that acts as a natural cover and holds our many underlying components together, important in multiple functions, yet it can be so easily marred. Burns, one of the reasons for skin damage, are the destruction of the different layers within the skin by exposure to excessive heat; heat that is greater than 120 degrees Fahrenheit, or by friction, electricity or chemical substances. The heat from the exposure cannot be distributed fast enough in the rest of the body, resulting in a breakdown of tissues exposed to heat. We will write a custom essay sample on Burns or any similar topic only for you Order Now Unlike other tissue damages, burns can cover a wider range of surface area. The causes may come from a variety of events such as boiling liquid, exposure to harmful chemicals, or electrical shock. Signs that indicate a burn may be swelling, redness of the area of damage, and pain. Burns are categorized by degree based on the duration, size and severity of injury; the least severe being first degree burns, second degree burns and the worst, third degree burns. Not only are there the regular, common burns that would first come to mind, but there are also chemical burns and electrical burns. Chemical burns occur when the skin is exposed to a corrosive substance that consists of either a strong base or acid. Electrical burns are cause by contact with electric conducting objects that are live. Types of treatment are determined by the severity and also determine the place to which the person should receive the treatment. Regeneration of the damaged tissue will differ accordingly to the type of burn. First degree burn, it refers to the superficial damage to the skin and causes only local inflammation. The inflammation consists of pain, a small amount of swelling, dryness and redness. Peeling, of the area affected, may be seen. This type of burn will only have an effect on the epidermis. Examples of first degree burns include sunburns, flash burns or any other burn that derives from a brief exposure to severe heat. Treatment for this type of burn depends on the location, cause, extent of the burn and may include cold compresses, skin soothing ointments or pain relieving aspirin. The skin usually heals within a time span of a few days without permanent tissue damage. Second degree burns affect the epidermis and the superficial dermis layer of the skin. The burn is often characterized by moist blisters, skin lesions, and bits of shredded epidermis. Also, the injury is often displayed as white. The area of damage is prone to high risks of infection and victim experiences intense pain around the area. In a lot of cases, second degree burns are the consequences of exposure to flames, scald inducing events and contact with chemicals, electricity or hot objects. The treatments for second degree burns depend of the same characteristic of first degree burns. Second degree burns include the addition of extra care to prevent infections. The skin heals within about 3 weeks and 6 weeks if the wound is superficial or deep, as the skin re-epithelializes. At the end of healing, there is minimal scarring to no scarring at all although discoloration of the area may be present. A third degree burn, also referred to as a full thickness burn, destroys the epidermis, the entire dermis beneath it, injures the subcutaneous tissue, and may spread to the muscles. Accessory structures are destroyed. The area of the wound may appear white and leathery due to the damages done to the blood vessels and nerves. The affected skin may also appear black, yellow, or even brown and is painless due to the impairment of vessels and nerves. The skin loses its elasticity, becomes dry and produces the appearance of being charred. Some of the causes of third degree burns may include scalding liquids, flames, chemical substances, over-exposure to excess heat or even electricity. If not taken into serious account with medical attention, the damaged skin will heal poorly and slowly. Since the epidermis and hair follicles are eliminated, new skin will not form. Treatments for these burns consist of procedures such as attentive care and cleaning, skin grafting, anti-biotic mediation and as such. The smaller areas will take fewer months to heal than the larger areas since those require grafting, which is the replacement of the previous damaged skin with transplant skin through surgery. ttp://www. webmd. com/skin-problems-and-treatments/third-degree-burn-full-thickness-burn http://www. medicinenet. com/burns/page2. htm http://faculty. stcc. edu/AandP/AP/AP1pages/Units1to4/skin/repairof. htm http://www. urmc. rochester. edu/encyclopedia/content. aspx? ContentTypeID=90ContentID=P01760 http://www. chw. org/display/PPF/DocID/21911/router. asp http://www. metrohealth. org/body. cfm? id=1014oTopID=1007 http://www. rayur. com/skin-burn-anatomy-definition-causes-symptoms- and-treatment. html How to cite Burns, Essay examples

Tori Sims Steve Bartman free essay sample

While the crowd was reaching for the ball one of the baseball players were also, unfortunately the ball did not land in the baseball players hands. Steve Barton caught the ball not realizing that he had now gotten himself in a situation that would now become history. Shortly after Barman had caught the ball form the player the crowd began to become more frustrated with him and started chanting terrible things. Barman sat quietly in his seat with his headphone on his ear.The crowd became furious because of his actions of not responding witched caused them to think that he did not care about what he had done, this is called fundamental attribution error. As the game continued Barman sat uncomfortable because of what had happened. He then turned to his friend and asked her if what he had did was wrong. She simply explained to him that what he had done was not wrong because everyone else was doing the same thing which was aiming for the ball. We will write a custom essay sample on Tori Sims Steve Bartman or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page She tried to comfort him so that he would not feel as bad as he did for what he had done. Steve Barman feeling discomfort from his action is called cognitive dissonance. When the game still began to continue more and more fans began to react off of the Steve Barman incident. The chanting began outside of the game and quickly spread throughout the entire stadium. This action from the crowd is called conformity. History was made this particular night and it was a game that everyone will forever remember.