The document summarizes the key components and functions of the human digestive system. It describes the major organs that make up the digestive tract, including the mouth, esophagus, stomach, small intestine, large intestine, and rectum. It explains the role of each organ in digesting and absorbing food, breaking it down into nutrients and eliminating waste. The document also briefly discusses three accessory organs - the liver, gallbladder, and pancreas - and their roles in aiding digestion.

1. HUMAN DIGESTIVE SYSTEM
By,
ASHWINI C H
ROLL NO: 01
NATURAL SCIENCE
ZAINAB MEMORIALCOLLEGE OF TEACHER EDUCATION
CHERKALA

2. HUMAN DIGESTIVE SYSTEM

3. WHAT IS DIGESTIVE SYSTEM ?
 Human digestive system is a
group of organs working together in
converting food into energy and
basic nutrients required for the body.

4.  MOUTH
 OESOPHAGUS
 STOMACH
 SMALL INTESTINE
 LARGE INTESTINE
 RECTUM

5. MOUTH
 Teeth mechanically break down food into small pieces
 Tongue mixes food with saliva

6. OESOPHAGUS
Approximately 20cm long
 Moves food from throat to the
stomach using muscle movement
called peristalsis.
 secerte mucus

7. STOMACH
 J shaped muscular bag that stores the food
You eat, breaks down in to tiny pieces.
 Mixes food with digestive juices that contain
enzyme to break down protein and lipids
 Acid in the stomach kills the Bacteria

8. SMALL INTESTINE
 Small intestines are roughly 7
meters long.
 lining of intestine walls has finger
like projections
called villi , to increase surface area.
 Nutrients from the food pass in to
bloodstream
Through the small intestine walls
 absorbs vitamins, minerals,
proteins etc

9. LARGE INTESTINE
 About 1.5meters long
 Accepts what small
intestine do not absorb.
 Absorb more water

10. RECTUM
 Short term storage which holds feces it is
expelled

12. ACCESSORY ORGANS
 Accessory organs is the not a part of food , but play a
critical role.
 Include liver , gall bladder, pancreas

13. LIVER
 Directly affects digestion by producing bile.
 Bile help digest fat.
 Filters out toxins and waste including drugs
and alcohol and poisons

14. GALL BLADDER
 Stores bile from the liver , release it into the small
intestine.
 Fatty diets can cause gallstones

15. PANCREAS
 Pancreas produce digestive enzymes to digest fats ,
carbohydrates , and protein.
 Regulates blood sugar by producing insulin

16. REFERANCE
BASIC SCIENCE TEST BOOK , STANDARD IX