Digestive Diseases

Structures and functions of the human digestive system

Let’s Take A Trip Through The Digestive System!
Is the raw food diet good for this sort of thing? Examples may be seen in humans, who differ considerably from other hominids lack of hair, smaller jaws and musculature, different dentition, length of intestines, cooking, etc. Yes, I started giving it to him when he started having problems. Colon shows longitudinal muscle folds taeniae'. The large intestine terminates in the front part of the cloaca.

A Learning Resource

Human digestive system

Food is partly broken down by the process of chewing and by the chemical action of salivary enzymes these enzymes are produced by the salivary glands and break down starches into smaller molecules. On the way to the stomach: 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. This muscle movement gives us the ability to eat or drink even when we're upside-down.

In the stomach - The stomach is a large, sack-like organ that churns the food and bathes it in a very strong acid gastric acid. Food in the stomach that is partly digested and mixed with stomach acids is called chyme. In the small intestine - After being in the stomach, food enters the duodenum, the first part of the small intestine.

It then enters the jejunum and then the ileum the final part of the small intestine. In the small intestine, bile produced in the liver and stored in the gall bladder , pancreatic enzymes, and other digestive enzymes produced by the inner wall of the small intestine help in the breakdown of food. In the large intestine - After passing through the small intestine, food passes into the large intestine. In the large intestine, some of the water and electrolytes chemicals like sodium are removed from the food.

Many microbes bacteria like Bacteroides , Lactobacillus acidophilus , Escherichia coli , and Klebsiella in the large intestine help in the digestion process. The first part of the large intestine is called the cecum the appendix is connected to the cecum. Food then travels upward in the ascending colon. The food travels across the abdomen in the transverse colon, goes back down the other side of the body in the descending colon, and then through the sigmoid colon.

The end of the process - Solid waste is then stored in the rectum until it is excreted via the anus. In human beings, this is between the diaphragm and the pelvis alimentary canal - the passage through which food passes, including the mouth, esophagus, stomach, intestines, and anus. Chyme goes on to the small intestine for further digestion.

When you swallow, the epiglottis automatically closes. When you breathe, the epiglottis opens so that air can go in and out of the windpipe. It uses rhythmic muscle movements called peristalsis to force food from the throat into the stomach. It stores and releases bile a digestive chemical which is produced in the liver into the small intestine.

It filters toxins from the blood, and makes bile which breaks down fats and some blood proteins. So that it fits down our throats.

Swallowing triggers its closing over the trachea to prevent food and fluids from draining into our lungs. Concentrated bile is released into the duodenum as needed to break down fats into an absorbable form. This duct collects donations from the liver and the gall bladder bile as it passes along to the duodenum of the small bowel. There are many sections to the large bowel — the appendix, caecum, ascending rising colon, transverse across colon, descending going down colon, sigmoid colon, the rectum and the anus.

The main purposes of the large intestine is to pass remaining essential nutrients into the bloodstream and the storage and elimination of waste left-overs. As the nutritional fluids are absorbed and transfered out to the bloodstream, the contents get more solid and compact.

Sometimes a piece of food gets stuck in here like bubblegum causing an infection. This fluid enzyme helps to soften up the food, the first chemical action along the digestive trail. It starts at the pyloric sphincter of the stomach and runs about 10 inches.

The duodenum is largely responsible for the continuing food breaking-down process fats are bombarded with bile , with the jejunum and ileum mainly responsible for the transfer of nutrients into the bloodstream. Both insulin and glucagon are produced by the pancreas.

The duodenum is responsible for continuing to break down of food into liquid form and the jejunum and ileum mainly responsible for absorption of nutrients into the bloodstream. When the rectum becomes full, it triggers nerves that carry that message to the brain. Make a Purse-string Sphincter or Valve In the digestive system, there are a number of places along the way that are designed to help regulate when, what direction, and how fast, food travels. Discussion Questions If a sphincter or valve did not close completely, what would you expect the contents to do?

The strongest stuff in the body! Is it poop yet?

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