"HUMAN DIGESTIVE SYSTEM"

     HUMAN DIGESTIVE SYSTEM                Human Anatomy

     The human digestive system is a complex series of organs and glands that processes food. In order to use the food we eat, our body has to break the food down into smaller molecules that it can process, it also has to excrete waste.

      Most of the digestive organs (like the stomach and intestines) are tube-like and contain the food as it makes its way through the body. The digestive system  is essentially a long, twisting tube that runs from the mouth to the anus, plus a few other organs (like the liver and pancreas) that produce or store digestive chemicals.

        THE DIGESTIVE process :

The start of the process – the mouth:  The digestive process begins in the mouth. 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 – After being chewed and swallowed, the food enters the esophagus. The eshopagus is a long tube that runs from the mouth to the stomach. It uses rhythmic, wave-like muscle movements 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 chime.

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 ileum (the final part of the small intensine). In the small intensine, 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.