Fantastic Voyage Essay Example for Free

Fantastic Voyage Essay Once again my mini sub and I will be miniaturized making us 8 microns long and witnessing another Fantastic Voyage in a human body. This time I will be swallowed by a 55 year old man, while he is eating his meal consisting of a hamburger, French fries, and a root beer. I will be piloting my sub through his gastrointestinal tract to monitor the digestion of his meal, I will be describing all major structures I go through. Digestion begins in the mouth. A brain reflex triggers the flow of saliva when we see or even think of food. Saliva moistens the food while the teeth chew it up and make it easier to swallow. Amylase, which is the digestive enzyme, found in saliva, starts to break down starch into simpler sugars before the food even leave the mouth. The nervous pathway involved in salivary excretion requires stimulation of receptors in the mouth, sensory impulses to the brain stem and parasympathetic impulses to salivary glands. Swallowing his food happens when the muscles in his tongue and mouth move the food into his pharynx. The pharynx, which is the passage way for food and air, a small flap of skin called the epiglottis closes over the pharynx to prevent food from entering the trachea and causing choking. For swallowing to happen correctly a combination of 25 muscles must all work together at the same time. After being chewed and swallowed the food enters the esophagus or gullet is the muscular tube in vertebrates through which ingested food passes from the throat to the stomach. It connects the pharynx, which is the body cavity that is common to both the digestive and respiratory systems behind the mouth, with the stomach, where the second stage of digestion is initiated. The esophagus is a long tube that runs from the mouth to the stomach. It uses rhythmic wave like muscle movements called peristalsis to force food from the throat into the stomach. At the end of the esophagus there is a sphincter that allows food into the stomach then closes back up so the food can not travel back up into the esophagus. The distal end of the esophagus is slightly narrowed because of the thickened circular muscles. This part of the esophagus is called the lower esophageal sphincter. Now I follow the food down the esophagus into the stomach. The stomach is a hallow saclike organ enclosed in a muscular wall. These flexible muscles allow the stomach to expand when you eat. The stomach has three tasks in digestion. Mixing foods with gastric juices, gastric juices are secretions from the stomach lining that contains hydrochloric acid and pepsin, an enzyme that digests protein. Hydrochloric acid I nteh stomach kills bacteria taken in with food and creates an acidic environment. Storing swallowed food and liquids, the stomach holds food and liquids Next is the pancreas, liver and gallbladder. The pancreas liver and gallbladder are essential for digestion. The pancreas produces enzymes that help digest proteins, fats, and carbohydrates, the liver produces bile that helps the body absorb fat, and the gallbladder stores the bile until it is needed. The enzymes and bile travel through special channels called ducts and into the small intestine where they help break down the food. After being in the stomach food enters the duodenum. The duodenum is a hollow jointed tube connecting the stomach to the jejunum. It is the first and shortest part of the small intestine. This is also where the bile and pancreatic juices enter the intestine. The jejunum is a part of the small bowel, located between the distal end of the duodenum and the proximal part of the ileum. The inner surface of the jejunum its mucous membrane, is covered in projections called villi, which increase the surface area of tissue available to absorb nutrients from the gut contents. The ileum its function is to absorb vitamin B12 and bile salts. The three main sections of the small intestine is the duodenum, the jejunum, the ileum. In the small intestine bile produced in the liver and stored in the gallbladder, pancreatic enzymes and other digestive enzymes produced by the inner wall of the small intestine help in the breakdown of food. After passing through the small intestine, food passes into the large intestine in the large intestine some of the water and electrolytes are removed from the food many microbes in the large intestine help in the digestion process. The first part of the large intestine is called cecum. The superior mesenteric vein drains blood from the small intestine jejunum and ileum. At its termination behind the neck of the pancreas the superior mesenteric vein combines with the splenic vein to form the hepatic portal vein. Before joining with the splenic vein, it lies next to the superior mesenteric artery wich arises from abdominal aorta. The portal vein drains blood to capillary beds in the liver. From here the hepatic vein arises and drains into the inferior cava where it enters the right atrium of the heart. From here he deoxygenated blood enters the right ventricle via the tricuspid valve. From the right ventricle it enters the pulmonary artery via the pulmonary valve and enters the lungs. From here the deoxygenated blood enters the left atrium of heart via the pulmonary vein and then the left ventricle via the mitral valve. From the left ventricle blood enters he aorta the ascending aorta. Thoracic aorta and ultimately abdominal aorta. The abdominal aorta divides into the left renal artery which enters the kidneys and supplies blood over there. Each renal artery divides into segmental arteries dividing further into interlobar arteries which penetrate the renal capsule and extend through the renal columns between the renal pyramids. These interlobular arteries supply blood to the accurate arteries that run through the boundary of the cortex and the medulla. Each arcuate artery supplies several interlobular arteries that feed into the afferent arterioles that supply the glomeruli and hence the kidneys. The urinary tract from bowmans capsule is, the blood then enters the kidney via glomerular membrane in the nephrons. The blood trickles from bowman’s capsule to renal tubule, that is proximal convoluted tubule, loop of Henley, distal convoluted tubule and then into collecting duct system. The blood from the cortex is passed to medulla of kidneys. The urine formed is collected via ureter. The urine from the ureter then passes to urinary bladder and leaves the body from the urethra. Homeostasis in the body is only possible if the cardiovascular system is working properly. This means that the system needs to deliver oxygen and nutrients to the tissue fluid that surrounds the cells and also take away the metabolic waste, the heart is composed of arteries that take blood from the heart, and vessels that return blood to the heart. Blood is pumped by the heart into two circuits the pulmonary and systemic circuits. The pulmonary circuit carries blood through the lungs where gas exchange occurs and the systemic system transports blood to all parts of the body where exchange with tissue fluid takes place. The cardiovascular system works together with all other systems to maintain homeostasis. Homeostasis and the urinary system, toxic nitrogenous wastes accumulate as proteins and nucleic acids are broken down and used for other purposes. The urinary system rids the body of these wastes. The urinary system is also directly involved in maintaining proper blood volume and ion concentration within the blood. One other contribution is that the kidneys produce a hormone that stimulates red blood cell production. The kidneys also play an important role in maintaining the correct water content of the body and the correct salt composition of extracellular fluid. External changes that lead to excess fluid loss trigger feedback mechanisms that act to inhibit fluid loss.

Women and Debt Essay -- essays research papers

The dreaded ‘D’ word; debt. All of us have it at some time or another, and we would all like to get rid of it. Recent studies have shown, it is more common for women to be in debt. There are many reasons why this is so. When you look into a women’s closet you do not just see your everyday jeans and shirts like you would in a man's. You would be lucky if you see a few suits, ties and a tuxedo from the senior prom, but it is entirely different for a woman. A woman’s closet looks more like a department store. You have dress shirts, casual shirts, baby tees, tank tops, camisoles, dress pants, work pants, "fat" jeans, "skinny" jeans from the10th grade, casual jeans, dress jeans, not including the jeans you bought to go with the sexy red top that doesn't match with anything but the red top. If you are lucky to have a walk-in closet you might have a section for shoes, belts and purses, that is, if you’re lucky! The reason this happens is because when women go shopping they don't just go to purchase a shirt or a pair of jeans; no, the intentions may be good but it never works out that way. Every time a women picks up a shirt the first thing she thinks is, this is cute; then we have this little vision, of seeing our cute little self, in this new shirt with a nice dark pair of jeans, and fabulous pink pumps, and that’s when the trouble begins. Most of us women already do have darks jeans and pink pumps, but they are old and faded or we were seen in them two times a...

Narrative of the Life of Frederick Douglass, an American Slave

Narrative of the Life of Frederick Douglass, an American Slave & Incidents in the Life of a Slave Girl. By Frederick Douglass, Harriet Jacobs (Introduction by Kwame Anthony Appiah). (The Modern Library: New York. c. 2004. 434 pp. $6. 95). Narrative of the Life of Fredrick Douglas, an American Slave is a firsthand account of the struggle of Fredrick Douglas who was born into slavery. The book hits on several main points of slavery from the brutal beatings that were inflicted upon slaves to the hypocrisy of Christian slave owners who used religious teachings as a justification for the treatment of their slaves. Douglas immediately immerses the reader in the atrocities of being a slave. The feel is very â€Å"matter of fact† but leaves the reader feeling compelled to be irate. Douglas is almost able to actually bring the reader into the life of a slave. The imagery that is used is so vivid that you can actually see the book play out in your mind. The ascription of meaning to the slave songs that Douglas heard in the pine woods is eye opening and the quote â€Å"The mere reoccurrence to those songs, even now, afflicts me; And while I am writing these lines, an expression of feeling has already found its way down my cheek. To those songs I trace my first glimmering conception of the dehumanizing character of slavery (pg 28) â€Å". The power of that quote alone is enough to open the heart and mind to the pain of the African American slave. The scope of this narrative is across the life of Fredrick Douglas, from his childhood as a slave to his role as an speaker on behalf of abolition in which he drew the courage to speak out even in front of his white counterparts. The purpose of the narrative is to inform the reader of the circumstances that the slaves had to deal with on a day to day basis and also as a public argument against slavery. I feel that he book is an exceptional piece of literature that by all standards envelops the reader into the world of a slave in the 1800s. The literature not only examines the life of Frederick Douglas but the ideas of the time in which he lived. Narrative of the Life of Frederick Douglass, an American Slave & Incidents in the Life of a Slave Girl. By Frederick Douglass, Harriet Jacobs (Introduction by Kwame Anthony Appiah). (The Modern Library: New York. c. 2004. 434 pp. $6. 95). Incidents in the Life of a Slave Girl by Harriet Jacobs is exactly as the title says, an account of incidents that â€Å"Linda Brent† had went through in her life. It is important to note that â€Å"Linda Brent† is used as a pseudonym for Jacobs. Brent did not fully understand that she was a slave until around age six when her mother dies and she is now One thing that I liked about the this narrative was the emphasis on family. In â€Å"Narrative of the Life of Frederick Douglas, an American Slave† family is not examined as much, due to the treatment of the slaves by their masters, their family lineage is mostly a secret. Jacob's goes into detail about the bond between her and her mother as well as her grandmother. The purpose of this book is to indulge the reader into several incidents that made Harriet Jacobs who she was. The motif of broken family cohesion is ever existing in the book as it is shown that black women are, most of the time, not allowed to raise their children, marriage is not allowed between slaves and if it is they do not live with one another, and mulatto children are sold and the white fathers feel no obligation to their children. The major conflict in the text between the need for freedom and the need to protect her children brings a very realness to the narrative. I do feel that Jacobs wants the reader to believe that all of the accounts or incidents in the book are in fact nonfiction, as stated, † Reader, be assured this narrative is no fiction. I am aware that some of my adventures may seem incredible; but they are, nevertheless, strictly true. I have not exaggerated the wrongs inflicted by Slavery; on the contrary, my descriptions fall far short of the facts (pg 1)† The horrific events that happened in the narrative are hard to understand or believe, that is why Jacobs inserts the previous adage. The juxtaposition I have chosen for the two slave narratives is family. In â€Å"narrative of the life of Frederick Douglas, an American Slave† family is not a prevalent theme. In fact the lack of family would be a more accurate depiction. Yet in â€Å"Incidents in the Life of a Slave Girl† family is one of the most important things to â€Å"Brent†, aside from freedom, and the argument could be made that family came before freedom. As a child family was very important to Brent and as a mother it remained just as strongly to her.

Constitutional Safeguards of the 4th, 5th and 6th Amendments to the US Constitution - Free Essay Example

Sample details Pages: 7 Words: 2041 Downloads: 10 Date added: 2017/06/26 Category Law Essay Type Critical essay Level High school Tags: United States Essay Did you like this example? Constitutional safeguards provided by US Constitution in the 4th, 5th and 6th amendments in regards to the criminal justice system are implemented to protect people against indiscriminate application of criminal laws and wanton treatment of persons suspected of violating the law. The amendments which are specifically designed to enforce constitutional rights of suspected criminals have had a significant impact in the criminal judicial sector. The workings of the courts in both juvenile and adult criminal proceedings and trials have been altered by these safeguards provided for by the amendments whereby the courts are required to conduct the proceedings or trials in a manner that is in conformity with the safeguards. Don’t waste time! Our writers will create an original "Constitutional Safeguards of the 4th, 5th and 6th Amendments to the US Constitution" essay for you Create order A legal aspect that contradicts or offends the constitutional safeguards is deemed inadmissible in court. The paper shall conduct identify and evaluate the constitutional safeguards by the 4th, 5th and 6th amendments in addition to providing an analytical and comparative study on the various impacts of the safeguards in the day-to- day operation of adult and juvenile courts. The 4th amendment enumerates certain safeguards in regards to unreasonable searches. The amendment gives people the right to be secure in their persons, houses and personal effects against unreasonable searches and seizures. The right is protected under the amendment which provides that it shall be not violated. Subsequently, the amendment provides that warranties shall only be issued is there is a probable cause and shall be supported by an oath or affirmation providing a detailed description of the place to be searched and persons or things to seized thereof. In essence the 4th amendment provides protection aga inst general searches by the government. Law enforcement personnel are entrusted with the authority and power to conduct searches, investigations, make arrests and seizures. However, this power is not absolute and is subject to limitations that require it to be exercised within the boundaries and the tenets of the law (Amar, 1994). When the police officers or law enforcement personnel exercise this power in a manner that exceeds or violates the prerequisite boundaries, the admissibility of the collected evidence is adversely jeopardized. It is the courts prerogative to ensure that the adduced evidence does not violate or offend the constitutional safeguards provided by the 4th amendment. The safeguards provided under this amendment only applies against a government action undertaken by a government employee whether state of federal or private persons working with a governmental agency. Thus under the 4th amendment, courts are not required to offer protection against bugging, or any forms of wiretapping conducted by private citizens such as private investigators even if the private investigators evidence directly links a person to the aforesaid crime. Cou rts are inclined to deny the admissibility of the private investigators evidence as it violated the safeguards provided under the 4th amendment. The private investigators evidence can only be admissible in court if it is sufficiently shown that he or she was working with law enforcement agency at the time of the collection of the evidence which was permitted by a warrant (Amar, 1994). However, this aspect has often had adverse impacts in the courts. The core purpose of criminal purpose of any judicial organ is to provide justice to the victims and punish the perpetrators of crimes. However, the absenteeism or failure by courts to protect evidence gathered by private persons has at times occasioned an injustice thus contradicting the core essence of the criminal justice system. A suspect maybe let off the criminal justice hooks solely based on the fact that the evidence linking them to the crime cannot be admitted in court because it was gathered by private persons. Additionally, private investigators with certain clues or knowledge purtaining some crimes are reluctant to coming forward and hand over the evidence to law enforcement agency because they are not protected by the 4th amendment safeguards (Amar, 1994). Under the 4th amendment, courts are to invalidate searches and seizures carried out under probable cause without a court warrant. However, the US Supreme Court has provided that in certain situations, warrantless searches may be deemed reasonable under present circumstances and admissible in court. The ruling according to scholars provided an exception to the constitutional muster provided by the 4th amendment in regards to searches and seizures. In Terry v. Ohio, 392 U.S. 1, 88 S. Ct. 1868, 21 L. Ed. 889 (1968) the Supreme Court ruled that the 4th amendment prohibits from detaining pedestrians and or conducting any kind of searches on person without probable cause (Amar, 1994). This provision applies to searches conducted under traffic laws. Courts articulate that a police officer must satisfy the probable cause requirement in pursuant to searches conducted in automobiles. In providing exceptions in the 4th amendment against seizures, courts strike a balance between the practical daily workings of a police officer and the privacy and freedoms interests of the public (Amar, 1994). In juvenile courts the application of the 4th amendment has resulted in divergent and contradictory rulings. The Arizona Court of Appeals relying on the case of Terry v. Ohio 392 U.S. 1, 16 (1968) in a case whereby a police officer encountered a juvenile sitting underneath a bridge wearing a heavy jacket under warm weather and conducted a search on the minor and found drugs on the minor and proceeded to arrest him. On ruling the court held that the minor was not seized and if it were a seizure it would not amount to an unreasonable seizure. Subsequently, in another ruling in the Di strict of Columbia, police officers were conducting consent searches in a bus. During the searches, they approached a fourteen year old in the bus and began questioning him. On conducting a search on the boy they found crack cocaine on the boy and arrested him. In the ruling the District of Columbia court of Appeals held that to a reasonable person based on the circumstances, the boy was not seized (Amar, 1994). The exclusionary rule in the US criminal jurisprudence was introduced by the Supreme Court in the case of Weeks v. United States, 232 U.S. 383 (1914). The rule enables courts to exclude incriminating evidence against a defendant upon sufficient proof that the evidence was procured in a manner that offended the constitution (Levy, 1974). The rule gives the defendants an option to challenge the admissibility of evidence by filing of a pre-trial motion. Evidence heard or adduced at the pre-trial motion cannot be used against the defendant in the proceedings. If the evidence used in the pre-trial is not suppressed by the court, and is instead used by the jury to convict, the defendant can challenge the admissibility of that evidence on appeal. However, the Supreme Court in the case of Lockhart v. Nelson, 488 U.S. 33 (1988), articulated that the exclusionary rule does not bar the retrial of a defendant in regards to suppressed evidence as the trial courts error does not go to the question of guilt or innocence (Levy, 1974). The 5th amendment provides various safeguards offer the defendant protection against self incrimination, double jeopardy and the right to due process. The provision of the right against self incrimination based on evidence got via a compelling confession made by coercion or deception. Under this safeguard, courts are compelled to exclude such kind of evidence as it is they were got via uncivilized manner that offended the tenets of the constitution. The self incriminatory rule includes the right to remain silent which was realized by the US Supreme Court in the case of Miranda v. Arizona, 384 U.S. 436 (1966). The court ruled that arrested persons must be explained their right to remain silent or have an attorney present during questioning (Amar Lettow, 1995). The ruling was meant to prevent acquiring of a confession from the suspect under pressure by police officers. This landmark ruling led to the creation of the Miranda Rights whereby police officers are required to inform an arrested person his constitutional rights to remain silent and have an attorney. If it is sufficiently proved that police officers violated a suspects Miranda Rights in obtaining evidence, courts render that evidence inadmissible as it was obtained on an illegality. Subsequently, the amendment provides a safeguard that prohibits governments from subjecting an individual to double punishment or trial of the same offence. This safeguard is called the right against double jeopardy. When conducting trials, the government has an obligation to inform the court of the previous convictions of the defendants regarding the same offence. Defendants can bring motions regarding the double jeopardy clause to challenge prosecution or overturning of a subsequent punishment (Amar Lettow, 1995). Subsequently, the 5th amendment provides every defendant the right to due process which requires all criminal proceedings to be conducted in a fair manner that is impartial. Courts are allowed to allow accused persons the right to present fully their case and defend themselves adequately against the charged crimes. The right to due is applicable to all phases of a criminal proceeding from pre-trial to the final appellate decision. In juvenile courts, the right to due process is strictly enforced as required in adult courts. Juveniles are given the right to have an to call witnesses to appear on their behalf and remain silent. They are also accorded the right to cross-examine witnesses and obtain sub-poenas to compel witnesses to appear on their behalf. The availability of enforcing these rights in the juvenile courts has positively impacted the outcome of the court proceedings and the court cases. The juveniles have an equal and fair ability as the adults to fully and adequately exercise all their rights in the criminal trials. The awarding of these rights in the juvenile courts ensures that no miscarriage of justice is occasioned pursuant to the 5th amendment (Amar Lettow, 1995). The 6th amendment gives defendants the right to a speedy trial which is conducted in public by a jury which is impartial. The amendment also provides the right of a defendant to have an attorney and be informed the nature and cause of the aforesaid charges. The US Supreme court has not given clear guideline or ruling that gives an exact time limit at which a trial should be deemed excessive and not speedy in consonance with the 6th amendment. Instead the court has provided a balancing test that is used in the other lower courts whereby it weighs the reasons and causes of delay against the prejudice suffered by a defendant occasioned by the delay. A delay of one year in bringing a defendant to trial can be deemed as contravening the speedy trial clause. However, defend ants whose own actions have directly resulted to lengthy trials cannot claim the protection of the speedy trial clause (McCormick, Strong Broun, 1999). Subsequently, the safeguard provided by the 6th amendment to inform the defendants to be informed the nature and cause of the charges is interpreted by courts in two distinct elements. The defendants must receive notice of any criminal complaint lodged against them and that defendants should not be tried and convicted on charges that vary from the crimes set out in the charge sheet. After the arraignment in court the written charges are read to the defendants to determine if the determine fully understands them (McCormick, Strong Broun, 1999). Arraignment in court gives the defendants the right to be represented by a counsel. However, this right is not absolute as the defendants have a right to defend themselves in the course of the criminal proceedings in a process called appearing pro se. Courts also apply the exclusionary rule w hereby any evidence obtained in a manner that offended the constitution is excluded from the trials. Subsequently, the right to have an impartial jury gives the defendant the right to a jury pool whereby the impartiality of the jury is determined via a voir dire. In juvenile proceedings courts may suspend the right to have a public trial if is of the view that it is the best interests of a child (McCormick, Strong Broun, 1999). References Amar, A. R., Lettow, R. B. (1995). Fifth Amendment First Principles: The Self-Incrimination Clause. Michigan Law Review, 857-928. Amar, A. R. (1994). Fourth Amendment first principles. Harvard Law Review, 757-819. Levy, L. W. (1974). Against the Law: The Nixon Court Criminal Justice. Harper Row. McCormick, C. T., Strong, J. W., Broun, K. S. (1999). McCormick on evidence (Vol. 1). West Group Publishing