Describe the digestive system of the human body?

Answer 1

The disgestive system is vital to sustain life processes. It digest food, nutrients, excretes waste generated by the body and allows organs to obtain nutrients to carry it's own processes.

It also helps hydrate the body with necessary liquids.

Answer 2

The digestive system of the human body can be described as a long tunnel. The process begins during chewing, when the enzyme salivary amylase begins to break down carbohydrates. Swallowing carries the food through the throat and gravity takes it down the esophagus. When it enters the stomach the food "bolus" triggers various digestive juices to be released from the stomach wall, which primarily work to break down proteins. One of these is HCl- hydrochloric acid, which is part of why excess amounts of this fluid can cause it to leak back up into the esophagus which does not have a lining that's resistant to these acids. The other major enzyme acting in the stomach is Pepsin.

The GI system is regulated and coordinated by regulatory peptides which control secretion of enzymes, electrolytes, and water as well as influencing gastric emptying, release of certain hormones and the process of intestinal absorption. The regulator peptides are gastrin, cholecystokinin (CCK), secretin, and gastric inhibitory peptide (GIP).

When the stomach contents (chyme) leave the stomach through the gastric sphincter they enter the duodenum of the small intestine. At that point there are numerous enzymes that are secreted into the small intestine from both the pancreas and the mucosa cells along the small intestine walls. One of the key enzymes released from the pancreas is Insulin, which affects the storage and release of glucose into and from the blood.

Another important component in the small intestine is bile, which arrives via a special duct from the liver. Bile is crucial for digestion and absorption of fats and fat-soluble substances such as vitamins A and D.

The small intestine is composed of different sections, each of which have different characteristics and absorb different vitamins, minerals and macronutrients. In the colon, water is reabsorbed from the matter as it is moved through the three major sections, the ascending colon, the transverse colon, and the descending colon. The waste is released through the sigmoid colon, rectum and finally the anal sphincter.

This is but a brief description, and the system is extremely complicated, including its own nervous system to oversee the movement of matter throughout. It is one of those amazing processes we tend to take for granted until something goes wrong.

Answer 3

The digestive system is a series of organs that work together to break down food and absorb its nutrients. It includes the mouth, esophagus, stomach, small intestine, and large intestine, as well as the liver, pancreas, and gallbladder. Digestion begins in the mouth with chewing and saliva production, and ends with waste excretion through the rectum.

Answer 4

The alimantry canal along with the associated glands is called digestive system

Answer 5

The digestive system is where the food breaks into small pieces the turn it into waste (feces)(^-^)/

Answer 6

It breaks down food into usable chemicals