Digestive System

Protein digestion occurs mainly in the stomach and also in the small intestine.

When protein food is eaten and enters the stomach, the hydrochloric acid in the stomach "denatures" the protein. This means it starts to break the protein down into short chains of amino acids joined together (peptide chains).

This is also when the the hydrochloric acid (HCl) also activates an enzyme called pepsin to participate in the break-down of the protein.

After this, the broken down protein enters into the small intestine where it is further broken down into the di-peptides (2 amino acids joined together) by pancreatic enzymes and then into its individual amino acids by other pancreatic enzymes.

The amino acids are absorbed through the small intestine and travel in the blood stream into the liver.

The main function of the left side of the human (quardrovascular) heart is to collect oxygenated blood from the lungs, then pump it around the body.

The main function is to get oxygen rich blood from the lungs and pump it to the whole body.

it is all yummy in your tummy...:) As the person who posted above me has stated, cheese is "yummy in your tummy." This is only semi-true. First, an enzyme in saliva called amylase digests any starch that is in the cheese, changing it into glucose, a carbohydrate (sugar). If you hold the cheese in your mouth for thirty to forty seconds or so, you will find that the cheese actually gets sweeter. This is because of the amylase turning the starch into sugar. Next, the food travels through the esophagus into the stomach. The epiglottis, a small strip of tissue, closes over the trachea, or windpipe, allowing food only to pass down into the esophagus. No digestion occurs in the esophagus. Peristalsis, the muscular movement that pushes food through the digestive tract, is the only thing that occurs there. An enzyme in digestive stomach acid called pepsin digests the protein in the cheese. The chyme, or semi-digested food, created in the stomach then moves to the small intestine. The small intestine is where the most chemical digestion occurs. This is also where most absorption of nutrients occurs. Villi, protrusions sticking out from the walls of the small intestine, allow the small intestine to have the greatest surface area possible, i.e., the most absorption in the least amount of time. The remaining chyme, a thin, watery substance, then enters the large intestine. The large intestine helps to maintain homeostasis by absorbing most of the water from the chyme. The water, absorbed into the body, helps blood to be liquid, among other things. Then, the remaining chyme, now called feces, enters the rectum, where it is stored. It is excreted out from the anus, which is another word for...well, you probably already know what it is. This is the complete "journey" *muffled laughter* that cheese, once ingested, takes through the body.

This region is called the pharynx.

Nutrients are substances that are absorbed by the body through the process of digestion.

It allows us to speak and keeps our food in between our teeth when we chew.

The tongue has three main functions. First, it carries on its surface the taste buds which send information to the brain about the nature of the food being eaten. It seems likely that the sensation of taste is not merely to make eating a pleasure, but also to act as a protective mechanism designed to cause the rejection of noxious (harmful) foods.

Secondly, the tongue plays an important part in the process of digestion. It enables the food to be moved about the mouth and to be placed in a position where it can most effectively be ground down by the molars. When the contents of the mouth are ready to be swallowed, the tongue forms them into a ball, or bolus, which is moved toward the pharynx at the beginning of swallowing.

Finally, the tongue is concerned in speech. By assuming different positions in the mouth it alters the shape of the air passage through which pass the sounds made by the vocal cords.

Metabolic panel may refer to either a basic metabolic panel (BMP or chem-8) or comprehensive metabolic panel (CMP or chem-14). A BMP is a blood test which measures the levels of 8 chemical compounds including sodium, potassium, chloride, bicarbonate, blood urea nitrogen, creatinine, glucose and calcium. A CMP is a blood test which measures all the aformentioned compounds in addition to alkaline phosphatase (ALP), total protein, albumin, AST, ALT and total bilirubin. eGFR refers to the estimated glomerular filtration rate which is usually calculated in the medical setting using the MDRD equation using the patient's age, gender, race and serum creatinine levels.

The following are some benefits of ultimate colon cleanse; Making the digestive system functions well, Preventing the hard stool or constipation, increasing the energy and Improving one's concentration.

Peristalsis. The movement of muscles bringing the food to the stomach.

there arefour points:

1.presence of villi gives large surface area for absorption

2.villi consist of extensive network of blood vessels which allows max assimilation and absorption

3.the length of the small intestine is so long and the digestion is a slow process, thus by the time the food or chyme reaches the end of the small intestine, its completely absorbed

4.intestinal juices present in small intestine speed up the absorption

-> write this in exam and you will pakka get full ;D

I believe they are pepsin, hydrochloric acid, and gastric acid. Pepsin digests proteins and breaks them into protein fragments. It can only work in acidic environments. Many people believe that the stomach acid breaks down food, but it is actually the pepsin that is activated by the acid.

because as it enters to the oesophagus it should really be digested or else or organs won't work properly

the above answer is correct, but can be improved. most foods must be digested forst, so that they can get into the cell. cells are very small and most foods are too big to even get through the cell membrane. therefore, the food must break down so they can fit through the cell membrane and proceed into the cell.

For example if you have had too much acidic food or drinks then if you take a capsule for example alka seltzer it should lower the pH in your stomach and bring the pH to a good suitable level.

Pepto Bismol can be a good way to go.

yes some fish have intestines up to 1 meter long

the fly is smaller

Ice cream is the most important absorbing organ in the digestive system.

Most of the carbohydrates are absorbed in the small intestine after being digeste. A very small amount are absorbed in the mouth. To find out more about carbohydrates (including the types and classification), see Related Links below

Colon cancer involves the destruction of the epithelial cell layer, by which the effectiveness of absorption of excess water at the colon is greatly reduced. This will lead to diarrhoea has there will be more fluid being egested that the body has failed to absorb. Dehydration and deficiency diseases can then arise. The secretion of folic acid and microorganisms that produce vitamin K is also affected due to the destruction of the cells that secrete them, found in the mucosa of the colon.

Peristalsis are muscular contractions that push food, partially digested food, and solid waste through the digestive system. Peristalsis is under the involuntary nervous system. No matter how hard you might try, you cannot willfully control or influence peristalsis.

Upon entry into the mouth, the enzymes within the saliva are already working on breaking down the food. The food then travels down the esophagus, where it continues to be broken down further, while the intestines and stomach pull the nutrients from the foods, and distribute them to the necessary units in order to keep the body functioning.

3 digestive disorders are acid reflux, ulcers, and barret's esophagus to name a few. Acid reflux, commonly known as heart burn, is caused by the acidic contents of the stomach moving up into the esophagus. Ulcers are often caused by the bacteria H. pylori, and is treated with antibiotic medication. Ulcers may also be caused by stress. Barret's esophagus is caused by long term acid reflux, where the acid changes the composition of the cellular lining of the esophagus.

Resparation is the creation of energy, in order to do this the body needs oxygen and glucose. Foods are broken down by the stomach and glucose and carbohydrates are absorbed into the bloodstream to the mitocondria (energy creating cells). The oxygen comes from the lungs and meets the glucose at the mitocondria.

A ruptured appendix is generally caused by an inflamation which is termed Appendicitis. A rupture simply meants the wall has broken exposing the rest of the abdominal organs to the contents of the appendix. This causes problems it allows the spread of the infection.