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Unit 2 Human Digestive System - Coggle Diagram
Unit 2 Human
Digestive System
The Digestive Process
a complex series of organs and glands that processes food.
our body has to break the food down into smaller molecules that it can process; it also has to excrete waste.
The digestive system is essentially a long, twisting tube that runs from the mouth to the anus
The start of the process
the mouth
Food is partly broken down by
the process of chewing
by the chemical action
of salivary enzymes
On the way to the stomach
: the esophagus
The esophagus is a long tube that
runs from the mouth to the stomach.
It uses peristalsis to force food
from the throat into the stomach.
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
food enters the duodenum, the
first part of the small intestine.
It then enters the jejunum and then the ileum
In the small intestine, bile, 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
In the large intestine, some of the
water and electrolytes are removed from the food.
The first part of the large intestine is called 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.