... and secondary lymphatic organs, depending on their function. The primary organs include most importantly, the thymus and the bone marrow, because they are responsible for the formation, development and maturing process of the immune cells. The secondary organs refer to those organs into which the immune cells migrate. Together with the lymph nodes and lymphatic tissue of the mucous membranes such as the tonsils, intestine, and the spleen. Thymus The thymus is a central lymphatic organ. It ... the large phagocytes (macrophagocytes). When lymph passes through the lymphatic vessels into th...

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... intestines. It is about 7 meters long and is split into three sections: the duodenum, the jejunum, and the ileum. The main function of the small intestines is absorption. With more surface area, there is increased absorption. That is why the small intestine contains many folds for more surface area for the absorption of the needed chemical energy from the chyme. It's folds are called plicae. Within those folds there are more folds called ... is what the large intestine or colon is for. Although the diameter of the large intestine is larger than the that of the small intestine, it is sho...

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... popular genetic cause for Hirschsprung disease is an alteration in the RET gene. This gene has a very important task of creating protein, this protein is essential for a good development of many different types of cells, without a good amount of protein entering the enteric nerve cells, the cells are not able to function correctly which will not allow the colon to move stool normally causing fecal material obstruction. To add ... sick from this illness. The Ostomy surgery consists of taking away the unhealthy section of the large intestine. The healthy end of the intestine is moved to a...

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... received very little sleep, I visited a local Starbucks coffee shop. After ordering and consuming a beverage containing a large amount of caffeine, I noticed that the sluggishness and sleepiness I had been stricken with, subsided. I began to wonder if my condition had been heightened as a direct result of the beverage I had consumed, and if so, what in the beverage would have caused this to happen. I concluded that it was most likely ... small intestine into the bloodstream, where it takes about 15-45 minutes to reach peak levels. The level of caffeine in the blood reaching the brain de...

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... . These structures are believed to be remnants of organs presumed to be present, well developed and functional in the ancestor. 1. Caudal vertebrae - four pieces of fused bones located on the distal end of the spine. This is presumed to be remnants of the tail well developed in the ancestor of all vertebrates. 2. Appendix - a vermiform pouch connected to the bottom of the large intestine. It has no known function to us and can be removed without any ... effect on our digestive process. But for mammals, which are herbivorous, this pouch is important in digestion. 3. Nictitating membrane -...

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... in contact with the food products. Where the ileum joins the large intestine is a valve, called the ileocecal valve, which prevents the back flow of materials into the small intestine. By the time material reaches this point, it has a rather pasty consistency. The parts of the food that can't be digested get pushed into the large intestine, also called the colon. It is about 5 feet long. Its function is to move the waste from the small intestine on to the rectum. The material first ... passes through the ascending colon ... ...

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... from problems with our pancreas, to bladder dangers. This section will explain the different parts of the excretory system and what it is used for. Components of the Excretory System: Anatomy: For the human body to survive and function properly it must receive food. The food is broken down by chewing, done in the mouth, by the teeth. After the food is broken into particles, it is mixed with saliva, and ... is taken out of the body as urine through the urethra of each human's excretion organ. Intestine: The intestine is the part of the body found in-between the stomach and the anus which...

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... through osmosis. When the digestive system breaks down the food osmosis helps to absorb the nutrients into the intestine and individual cells. This process occurs in both small and large intestine. However, majority of the process occurs in large intestine only. As the main function of the large intestine is to remove fluid and salts, water flows out of the large intestine with the lack of salt due to osmosis. The high concentration of the particles in the blood than in the large intestine, water diffuses towards the particle-rich blood ... . (Digestive System 2003) 3) Active Transport A...

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... is where the digestive fluid from the pancreas, liver, gallbladder, and gland cell from the wall of the intestine mix with the acid chyme that seeps from the stomach. The large intestine or colon is attached to the small intestine and also plays a role in digestion. The major function of the colon is to reabsorb water that has entered the alimentary canal. The colon finishes up the work by reclaiming the water that has stayed in the lumen. The final phase of the digestive system ... is when the feces reach the terminal part of the colon called the rectum. This is where the ... ...

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... be condensed to simple sugars (monosaccharides) in the intestine prior to being absorbed into the bloodstream. Glucose is often referred to as blood sugar (Stanfield 54). Monosaccharides are the least complex form of carbohydrates. They are sweet, call for no digestion, and can be absorbed directly into the bloodstream beginning at the small intestine. They include glucose, fructose, and galactose. ... Glucose, also known as dextrose, is the form of carbohydrate to which all other forms are transformed for ... ). Cereal grains are the primary source of protein for the majority of the w...

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... fibrosis is Intussusception. Intussusception is when part of the intestine is pulled up inside another part of the intestine. What causes this is that sticky stool and mucus adhere to the inside of the intestines and are pulled along, pulling the intestine within itself. A similar condition called Rectal Prolapse involves the same action as in intussusception. In this case the rectum is pulled right out of the anus to the point where it is visible. Rectal ... from cystic fibrosis at a young age it was wondered why the disorder hadn't killed itself off. As a result of it being a recessiv...

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... States (United Network for Organ Sharing). This list is growing rapidly in the United States alone; a new name is added to the transplant waiting list every 16 minutes (UNOS). This should be reason enough for individuals to donate but this isn't the case or we wouldn't have a waiting list this large. Organ and tissue transplantation is proven to extend and enhance lives. Medical ... advances continue to make transplantation safer and more effective. As of the beginning of 2000, the survival rates for transplants are about 95% for kidney recipients, 85% for liver ... very strict. Even wi...

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... function of Vitamin C leads to many other services that Vitamin C provides for the body. For instance, Vitamin C is a large contributor to the synthesis of collagen (Brodsky 1). Collagen is a protein that provides the body with connective tissue. This connective tissue is used to keep the body together. There are four types of collagen that can be found in the body. Type I is found in the fibers of the body, specifically in the tendons (Brodsky 1). The purpose of ... the absorption of Iron. The act of being a reducing agent allows Vitamin C to enhance the absorption of Iron into the bod...

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... from their depression; but it may also cause brain abnormalities that can't easily resolve. These brain abnormalities, otherwise known as "cognitive deficits" impair the person's ability to properly function mentally. A person's ability to think clearly, solve problems, plan, pay attention, process information automatically, be flexible, and their ability to have insight are ... the lack of usage of the gastrointestinal tract (Herrin and Matsumoto 1). According to Herrin and Matsumoto, chronic under eating may cause atrophy to the small and large intestine (1). Stomach aches, bloating, ...

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... task accuracy, and error rate is increased. For optimal gastric emptying to be achieved, fluids should be cold or cool. A large volume of fluid empties more rapidly than smaller amounts do. One liter of fluid empties from the stomach and will be absorbed by the intestine within 1 hour. Athletes need to practice drinking during training to determine a comfort level and to learn to drink proactively, instead ... . His testes were found to be very small and weak and he reported loss of sexual function and desire. Investigations showed severely impaired function of the testes caused by centr...

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... and independent inverse association was observed between dietary calcium intake, estimated from dietary recall data, and blood lead concentrations in this large, stratified, national probability sample. The importance of adequate dietary calcium in the prevention of childhood lead toxicity is now well accepted and children at risk are provided calcium supplements in state and city lead-prevention ... calcium efflux from cells by substituting for calcium-sodium ATP pumps. This is probably one of the mechanisms by which lead interacts with calcium in the intestine; the less calcium in die...

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... combined with the creation and improvement of technology and vast social unawareness, is a significant factor in a large number of social, emotional, physical, and mental problems that plague all of humanity in one way or another. The alcohol that we associate with blackouts, hangovers, depression, and death is ethyl alcohol, or grain alcohol. For 5000 years, this fermentation of grain or ... to popular belief, is a depressant, not a stimulant. It is swiftly absorbed into the bloodstream by the small intestine, and less hastily through the stomach (Encarta Encyclopedia 98 Computer Editio...

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... (NHLBI) some other symptoms include sinusitis (inflammation of the nasal sinuses), clubbing, pneumothorax (rupture of lung tissue and trapping of air between the lung and the chest wall), coughing of blood, enlargement of the right side of the heart, abdominal pain and discomfort, too much gas in the intestine, and rectal prolapse. They also state that liver disease, inflammation of the pancreas, diabetes, and gallstones have also been known ... to find out if the imbalance between AA and DHA is responsible for the expression of cystic fibrosis. They fed large doses of DHA to mice, that ...

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