Human digestion Essay Example for Free

Human digestion Essay The salivary glands are the first to react in the digestive process, which are usually triggered by either the sight or the smell of food. Food enters the digestive tract through the mouth where the teeth, tongue, and salivary glands help moisten and break down the food within minutes. The food then becomes something called a bolus, which will travel through the pharynx, then through the esophagus, and into the stomach. As the food travels through the pharynx the epiglottis is in place to prevent food from entering the lungs. Once the bolus enters the stomach it is broken down with acid secretions. The food is partially digested within the stomach. The bolus then becomes chyme (a semiliquid food). Chyme usually leaves the stomach during a time frame of 2-6 hours. The small intestine is where most of the digestion and nutrient absorption takes place with the help of secretions from the liver, gallbladder, and pancreas. The small intestine consists of three parts: the duodenum, the jejunum, and the ileum. Anything that is not absorbed in the small intestine then enters the large intestine travelling through the sphincter. The sphincter prevents any of the remaining food from re-entering the small intestine. The large intestine is made up of two major parts: the colon and the rectum. The colon aids in the absorption of leftover water, vitamins, or minerals. Anything left over after this process is considered waste product (feces) and is then excreted from the body via the anus, which is attached to the colon. Reference Human Digestion Activity. Retrieved August 21, 2009 from http://corptrain.phoenix.edu/axia/sci241/sci241-digestivetract.html

Prejudice :: essays research papers

Prejudice By Prejudice people have been around forever. Prejudice goes on everywhere including here at Box Elder Middle School. It is sad people can’t have mutual respect for each other even though we are all different in our own ways. Prejudice can be caused because of various reasons. Religion, ethnic race and social status are examples of causes of prejudice. Sometimes prejudice is caused by how we are raised. Many times parents pass on prejudice beliefs to their children. A lot people raised in the southern part of the country are prejudice against blacks. In the early to mid 1960’s, prejudice was alive and well in the south. Blacks had their own bathrooms and were forced to ride in the back of city busses. It’s hard to believe that was doing on only 40 years ago. A lot of Middle Eastern countries are very prejudice against women. The Civil War was based on prejudice beliefs. The North wanted to keep slavery and the South wanted to abolish slavery. Many blacks were beat, raped and killed just because of the color of their skin. Schools in the 1950’s were segregated. Some students were forced to ride buses for many miles to prevent whites and blacks from attending the same school. Finally segregation was introduced. It caused a lot of problems, including some riots but eventually people learned to live together and I believe it ended up being a good thing for people and out country. Slavery was stopped shortly after the Civil War but it did not stop people from being prejudice. The only way to stop prejudice is to teach all children from a young age to respect all people. Sometimes parents are not the right people to teach their children because they are already set in their ways and will never change. Some people are prejudice because they just don’t know how to act any different or maybe they have never been exposed to different cultures or beliefs. Some people just think they are better than somebody else for no reason at all. Our only chance for a successful society is to get rid of prejudices. This is much easier said than done. Some religious prejudices have been going on for thousands of years. I don’t know if there is any hope for these people. There are some simple things we can do as students and people. It is real simple.

I Am Legend Analasys Essay

The movie I Am legend is a science fiction about Robert Neville (Will Smith), who is a military scientist and the lone survivor of a biochemical disease which was supposed to cure cancer 3 years previous. His only companion is his dog Samantha, several mannequins scattered around the city that he talks to, several animals that escaped from the zoo, and the victims of the plague brought about by the cancer cure gone rouge. Robert spends his days scavenging homes for supplies and waiting on the docks of the naval base for any survivors who are reached by his radio broadcast.However, his nights are spent hiding his trace and keeping a video log of his scientific research of a possible cure, tested on rats. Dr. Neville himself is immune to the airborne strain of the virus. During key parts of the movie Neville is haunted by flashbacks of his family who died while trying to evacuate the city. He is severely outnumbered and quickly running out of time. In the opening scene, a television ne ws report between a news anchor and another woman who says the cancer treatment trials have had 100 percent success rate the news reporter responds with â€Å"So Doctor, you have created a cure for cancer haven’t you? a slight smile from the woman, â€Å"Yes, Yes we have. † The camera blacks out and goes to several scenes of a destroyed New York City with a pre-recorded message of Neville himself â€Å"My name is Robert Neville. I am a survivor living in New York City. I am broadcasting on all AM frequencies. I will be at the South Street Seaport every day at mid-day, when the sun is highest in the sky. If you are out there†¦ if anyone is out there†¦ I can provide food, I can provide shelter, and I can provide security. If there's anybody out there†¦ nybody†¦ please. You are not alone. † During this sequence, the camera angle goes over the city in a top-down view to show the empty cars, destroyed buildings, some covered in battered and rippe d quarantine plastic. During the course of the movie, the viewer discovers exactly how alone Robert is. He has prerecorded television news from years past, when he is bored he goes to the local movie rental store. There he has a friend named Fred, and a secret crush who he is too afraid to talk to. Both are mannequins.His dog Samantha is a German shepherd handed to him by his daughter Harley as their helicopter was taking off before it was brought down by an explosion cause by a crashing helicopter into the bridge. Robert always has Sam by his side except when she runs into an abandoned building while chasing a deer. Neville panics and runs in after her. They discover a colony of diseased and Robert decides to set a trap for one. Taking a vial of his own blood, he smashes it over the trap and waits. Once he catches one he is surprised that one infected exposes himself to sunlight just to roar and pant at Robert.All the while his skin begins smoking and he goes back inside. Back at h is house he does his pre-dusk ritual of covering his scent with rubbing alcohol and shutting the metal shutters on the windows. He sedates the diseased and proceeds to inject her with the most recent possible strain of cure from his menagerie of lab rats. She begins to have slowed heart rate and she looks better, and then dies. He gives up hope and returns her to her previous self of infection. She is then kept in a sealed room on a stretcher. The next day as he is driving through the city he sees a mannequin the he left at the video store.Obviously mannequins cannot move and possibly the loneliness has gotten to his mind but he begins yelling at it. â€Å"Fred, if you’re real you tell me now! † with no response he begins shooting it and falls into a trap laid out by the infected leader that roared at him before. Three infected dogs run out of a building but are stopped by the last ray of sunlight. Roberts leg is crippled from the trap and can’t make it to his c ar. The dogs run to them and go after Robert but Sam stops one and gets bitten. Robert goes home with Sam and injects her with the potential drug that didn’t work on the infected girl.The serum fails and Sam turns. Robert has no choice but to kill her. This moment seems to be the most memorable in the entire movie for anyone who watches it. Most people also seem to come close to tears or at least become depressed. The viewer becomes emotionally invested and hopes Robert finds a cure and Sam has always been there right by his side, it seems almost like counter logic for moviegoers to see the sidekick die. Robert flies into a depression fuel rage. Everything he has loved has been taken by this virus None of his serums have worked, and he is, as far as he knows, the last un infected alive.He takes his land rover to the docks and begins running over infected on a suicidal mission. He is overpowered but is saved by a woman who is searching for the survivor’s colony. She als o has a son. They all go back to Roberts’s house. She does not follow his strict trace removal and the hoard of infected find them. They fall back to the sealed room finding that the infected girl has been cured. Robert takes a vial of her blood and has the woman and son hide on a bunker in the wall till dawn. Robert sacrifices himself knowing they will not stop until they are dead.The ending scene is a voiceover of the woman as she walks up to the colony handing them the vial. While it's unlikely that the recipients of such biotech drugs would turn into raging night creatures that are afraid of sunlight, the truth is actually far scarier. The TGN1412 drug trial, in this drug trial, which tested an experimental arthritis drug on patients, things went terribly wrong: After being injected with the anti-inflammatory drug TGN1412, patients began tearing their shirts off, screaming that their heads were going to explode.One patient's head swelled to triple its normal size, and pat ients were passing out, vomiting, or screaming in sheer terror. Within minutes after the injections, patients were suffering from severe breathing attacks, convulsions and excruciating pain. As a relative to one of the victims explained: â€Å"He was completely lifeless, like a shell. He can't even move his eyelids. This machine is pumping out his lungs and his face is puffed out like The Elephant Man. † This is real life, not science fiction. And yet it sounds a lot like some of the side effects of the viral injection imagined in I Am Legend.While the movie was science fiction, the truth is, modern medicine is quite capable of making a mistake that unleashes a deadly virus and devastates humankind. Sources Cited: DVD video. â€Å"I Am Legend Burbank, CA : Warner Home Video, [2008] I Am Legend Critique. Anti Essays. Retrieved March 18, 2013, from the World Wide Web: http://www. antiessays. com/free-essays/308801. html Interview/journal. New England Journal of Medicine. †Å"Cytokine Storm in a Phase 1 Trial of the Anti-CD28 Monoclonal Antibody TGN1412. † August 14, 2006.

Huckleberry Finn - Thesis - 1521 Words

Yakov Suleymanov Senior thesis December 2008 Do you think you have role models in your life? Someone you can look up to and say â€Å"I Want to be like him†. If yes, first of all you have to ask yourself what is a role model? A role Model is a person who serves as a model in a particular behavioral or social role for another Person to emulate. In The Adventures of Huckleberry Finn by Mark Twain, Twain shows us two Sides of the coin by putting good role models for huck such as: Judge Thatcher, Widow Douglas, And many more. On the other side he shows us also bad examples of role models, characters like Pap, the king, and†¦show more content†¦They acted as if they would be one of their victims but ‘behind the Scenes’ they would stab them in the back. When Huck finds out about the king and the duke it is Too late and the duke turned Jim in already. Twain shows that the king and the duke are negative Role models for any person not just Huck. They take advantage of every situation and every Person as we see when they printed the leaflets with the winning prize for turning in Jim. Twain shows us throughout the book not only the good side of people but the bad side to. People In general like to read good things and ferry tails, but one cannot sent a message to his readers From just good characters who acting like angels the whole novel. At the end those bad Characters are those who add the spice to book and make it much more fun to read, they bring all The action all the fun all the adventure. Imagine The Adventures of Huckleberry Finn without Characters like Pap, the king, the duke, and tom sawyer? You cannot. Twain would not able to Write the book without one of them characters. It is pretty much like a puzzle if one part is missing you can never do it. In conclusion, throughout the novel The Adventures of Huckleberry Finn, Twain uses many characters to influence Huck the positively and negatively. Huck learns how to deal with any situation and learns from which characters to take example and which characters to ignore. Twain uses Huck to show how tough wereShow MoreRelatedThe North And South Fought The Civil War811 Words   |  4 Pagesthe following: The North and South fought the Civil War for many reasons, some of which were the same and some different. This weak thesis restates the question without providing any additional information. You will expand on this new information in the body of the essay, but it is important that the reader know where you are heading. A reader of this weak thesis might think, â€Å"What reasons? How are they the same? How are they different?† Ask yourself these same questions and begin to compare NorthernRead MoreThe Concept of Race in The Adventures of Huckleberry Finn by Mark Twain631 Words   |  3 PagesWithin his criticism of Mark Twain’s Adventures of Huckleberry Finn, Gregory Fowler uses examples from both the book and Mark Twain’s own life to discuss the different ways in which racism has morphed. Instead of analyzing The Adventures of Huckleberry Finn critically and solely, Gregory Fowler critically analyzes parts of the book and its effect to prove the different ways in which slaver morphs through the uses of allusions, exemplifications, and anecdotes. Fowler’s opening paragraph consistsRead MoreHuckleberry Finn, By Samuel Longhorn Clemens1520 Words   |  7 Pagesas follows: 1. (adj.) the essence of a thing while in it’s purest and most concentrated form. 2. (adj.) The most typical example or representative. 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Throughout the book Huck struggles with a negative opinion of racism and slavery that is otherwise not voiced by your everyday American southernerRead More The Final Episode of Mark Twains The Adventures of Huckleberry Finn3016 Words   |  13 PagesThe Great Importance of the Final Episode of Huckleberry Finn      Ã‚  Ã‚  Ã‚   One of the things many critics of Huckleberry Finn   just cant seem to understand is the final episode of the novel where Tom returns and sidetracks Huck from his rescue of Jim through a long series of silly, boyish plans based on ideas Tom has picked up from Romantic novels, such as those of Walter Scott.   Critic Stephen Railton dismisses these final chapters as just another version of their RoyalRead MoreThe Adventures Of Huckleberry Finn By Mark Twain868 Words   |  4 PagesThrough watching the film version of one of the greatest and most well known novels of all time, The Adventures of Huckleberry Finn by Mark Twain, many valuable lessons can be learned as well as many characteristics of regionalism observed. This novel, which was considerably provocative for the time in which was published, is the story of a poorly educated southern boy helping a runaway slave to freedom in the mid 1800s. Huck, the main character, runs away from his abusive father, Pap, and goes onRead MoreAnalysis Of The Book The Adventures Of Huckleberry Finn By Mark Twain Essay1492 Words   |  6 Pages â€Å"God has given you one face, and you make yourself another†. TAG (Title, author, genre): The Adventures of Huckleberry Finn, Mark Twain, satire full of adventure Context/Background: The story follows a teenager boy as he sets off on an adventure with Jim, a runaway slave. Together, they overcome a variety of obstacles and experience what it’s like to go off in the real world. Thesis: Throughout the novel, Mark Twain frequently Southern society through the use of satire. By doing so, Twain ridiculesRead MoreEssay about Tom Sawyer vs Huck Finn919 Words   |  4 Pages Even though Tom Sawyer might be â€Å"civilized† and a socially accepted boy, Huck is a better person because he knows that slavery is wrong and he is more rational and reasonable. In The Adventures of Huckleberry Finn, Mark Twain shows this many different situations in which the uncivilized person, Huck, is actually the civilized person, and also is more of a realistic and reasonable.   Ã‚  Ã‚  Ã‚  Ã‚   One example of how Huck is more of a realistic person is when they form a gang and are going to rob a largeRead MoreThe Adventures Of Huckleberry Finn By Mark Twain1317 Words   |  6 PagesDuring the period of time in which Adventures of Huckleberry Finn was written, people of color – especially those enslaved – were not thought of as â€Å"people†, with emotions and thoughts. Mark Twain, in writing the aforementioned book, disputes these ideas by providing a fully humanized black man. Rather than forcing the reader to artificially ingest morals, Twain makes good use of the passage of time over the course of his story, and the finite amount of description a scene can hold, to cause theRead MoreThe Damned Human Race by Mark Twain665 Words   |  3 Pages Mark Twain is arguably one of the greatest authors of the late 18th and early 19th centuries, writing unforgettable titles such as â€Å"Adventures of Huckleberry Finn† and â€Å"The Adventures of Tom Sawyer† which are still read by many today. However, it may be shocking for some to know he also endeavored in argumentative writing as well. â€Å"The Damned Human Race† is one such article. As with any Mark Twain writing, it is filled with emotion and thought. Although this article is extremely persuasive, dueRead More Censorship Should NOT be Placed on Books Essay1072 Words   |  5 Pagescan people take a book that a child enjoys based on their views? In schools some kids may or may not have read the book Huckleberry Finn. ?Huckleberry Finn is not only one of the best books ever written in this country but it?s also the most influential? (West, 43). Reading books gives people a sense of what history is all about. ?If black kids are never taught Huckleberry Finn they are put at a real disadvantage if they ever go on to study literature at the college level? (43). ?You can get all