1. Human Body System 4/23/15 Taylor, Misael, Juan, Yonas, and Samuel
Digestive System
Human Body System
4/23/15
Taylor, Misael, Juan, Yonas, and Samuel

2. Mouth The mouth allows food to enter the body.
Air also enters the mouth.
The mouth has different organs in the body such as the epiglottis, pharynx, and tongue.

3. Pharynx The pharynx is known as the throat.
It is the passageway from the mouth, to the nose, and the esophagus and larynx.
The pharynx allows the swallowed food and liquids to go through a passageway down to the esophagus.

4. Epiglottis
The epiglottis is a switch between the larynx and esophagus.
It allows air to enter the lungs and food to pass through the gastrointestinal tract.
The epiglottis also protects the body from choking on food that would disrupt the airway.

5. Esophagus & Stomach
The esophagus seems to have only one important function in the body - to carry food, liquids, and saliva from the mouth to the stomach. The stomach then acts as a container to start digestion and pump food and liquids into the intestines in a controlled process. The esophagus is a muscular tube connecting the throat (pharynx) with the stomach. The esophagus is about 8 inches long, and is lined by moist pink tissue called mucosa. The esophagus runs behind the windpipe (trachea) and heart, and in front of the spine. Just before entering the stomach, the esophagus passes through the diaphragm.

6. Stomach
Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

7. Liver
Function
Production of bile; which helps carry away waste and break down fats in the small intestine during digestion
Production of certain proteins for blood plasma
It metabolizes nutrients, detoxifies harmful substances, and makes blood clotting proteins
Enzymes help drive these chemical reactions

8. Gall Bladder Functions
Stores and concentrates bile, a yellow-brown digestive liquid produced by the liver
Absorptive epithelial lining concentrates the stored bile
The gallbladder contracts and secretes bile into the small intestine through the common bile duct
The bile helps the digestive process by emulsifying fats and neutralizing acids in partially-digested food

9. Pancreas Functions Releases juices directly into the bloodstream
Produces enzymes and sends them to the small intestine to further break down food after it has left the stomach
Three diseases associated with the pancreas are pancreatitis, pancreatic cancer and diabetes
It also produces insulin and glucagon

10. Parts of The Small Intestine
There are three major parts of the Small Intestine
Duodenum
Jejunum
Ileum

11. Duodenum
The duodenum is the first part of the small intestine and prevents any stomach acid from getting into the small intestine
The duodenum connects to 4 different organs around it, these include:
Pancreas
Liver
Gallbladder
Stomach
The pancreas, liver, and gallbladder all provide a lubricating agent that allows food to move smoothly through the rest of the small intestine

12. Jejunum Second part of the small intestine
This covers half of the main portion of the small intestine
The main purpose is to take out the nutrients from the food that you eat

13. Ileum
The ileum is the final part of the small intestine and connects to the colon/large intestine
This part of the small intestine is responsible for the reabsorption of bile salts and vitamin B12

14. Parts in The Large Intestine
Rectum
Appendix
Anus

15. Appendix A thin tube about 4 inches long Usually lies near the abdomen
Function of the appendix is unknown

16. Rectum The Rectum is usually 8-12 inches long
It connects the colon to the anus
It’s primary function is to receive stool from the colon, and wait until it is ready to come out.

17. Anus Last part of The Digestive System tract
Consists of two anal sphincters (inside and out)
Sphincters control the holding of stool
Pelvic Floor muscle has an angle between the rectum and anus that protects it from stool coming out when not necessary.

18. Sources http://www.innerbody.com/image_digeov/dige02-new2.html
system/45316/Pharynx
the-small-intestine-works/