DIGESTIVE SYSTEM

By: Juliana Marulanda

WHAT IS IT?

The Digestive system prepares food for use by all body use .

DIGESTION

The Chemical Break down of biological molecules into there compose part.

FUNCTION

Produces various chemical to break down the food

Filters out of harmful substances .

Get rid of wastes

DIGESTION 1

Mechanical Digestion: The physical braking apart of food.( changes form of food )

chew

tear

Mash

mix

DIGESTION 2

Chemical Digestion: when chemicals called Enzymes breaks up the food you eat so you can digested or your digestive system can absorb.

DIGESTIONS Both kinds of digestion occur in your mouth. 

Cuing mechanically breaks food apart wail an enzyme in your spit called Salivary Amylase breaks up carbohydrates

When you chew the food softens and the tong push it to the opening of your Esophagus ( back of your mouth) the esophagus squishes the food down though the stomach your stomach.

In your stomach food is turned and mixed with enzymes and other digestive juices ( like hydro chloric gases)

This Chemicals break down protein and fats .

THE DIGESTION TRACT

a long muscular tube with many sections and areas

Begins with the mouth and ends with the anus

PARTS OF THE DIGESTIVE TRACT

Mouth

Pharynx

Esophagus

Stomach

Small Intestine

Large Intestine

LOUTH

Mixes and rolls the food into tiny mashed bits

Pushes the little pits toward the Pharynx and into the esophagus when swallowing

ESOPHAGUS

A straight muscular tube that is about 10 inches long which connects the mouth with the stomach

Food takes about 4 to 8 seconds as it passes through to the stomach

They have a wall that moves liquids and foo safely and smoothly down(Peristalsis)

STOMACH

J shaped muscular sac

Foods is mixed with gastric juices ( hydrochloric and enzymes) secreted from the stomach wall

SMALL INTESTINE

Long (20 ft.) coiled tube beneath the stomach

It take hours to complete the journey

Absorbs martials cross the mucosa into the blood then other parts of the body for storage or further chemical changes

SMALL INTESTINE

Has three parts:

Duodenum: upper part about 10 in connects to the stomach . Where the digestive juices from the pancreas and liver combine with chime making it thin and watery

Jejunum: about 8 ft.

Ileum: about 12 ft.

LARGE INTESTINE Large dimer, but shorter ( 5 ft.)

Water is absorb from the undigested food making the waste harder until it becomes solid

Waste stays 1-12 hours

Waste is pushed into the expanded portion (rectum) of the large intestine

Solid waste stays in the rectum until it is excreted though the anus as feces

Appendix hangs on the right side of the large intestine

PATH OF DIGESTION

Mouth

Pharynx

Esophagus

Stomach

Small intestine

Large intestine

Anus

BIBLIOGRAPHY

http://humanbodycng7.wikispaces.com/3.+Digestive+System

http://www.brainpop.com/health/bodysystems/digestivesystem/preview.weml

http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/

http://kidshealth.org/parent/general/body_basics/digestive.html

http://www.yakult.com.au/resources/flash/flash_digestiveDD100.html