digestive system and its parts (2020_03_27 13_55_30 UTC) [Autosaved].pptx

Digestive system

1. Parts of DIGESTIVE SYSTEM

2. Digestion Process by which food is eaten or broken down to its simplest components CARBOHYDRATES → Glucose PROTEINS → Amino Acids FATS AND OIL → Fatty Acids TYPES OF DIGESTION Mechanical Digestion The breaking down of foods into chewable pieces 2. Chemical Digestion breakdown of food in the mouth, stomach and intestines through the use of acids and enzymes Alimentary Canal- digestive tract

3. Mouth Receives the food you eat Inside the mouth: TONGUE - moves the food TEETH - bite, cut and chew the food SALIVA - sticky fluid with colorless and watery appearance

4. esophagus a muscular tube that in humans is about nine inches (23 centimeters) long and passes from the pharynx down the neck to the stomach PERISTALSIS - wavelike movement of the muscle

5. stomach The stomach is a hollow muscular, J-shaped organ in the abdomen secretes acid and enzymes that digest food the inside has small folds called  rugae SPHINCTER - smooth circular muscles at the upper and lower ends of stomach

6. liver Largest organ inside the body FUNCTIONS OF THE LIVER It produces the bile , a substance that helps in the digestion of fats Process digested food Stores glycogen, vitamins and minerals which are released when needed by the body

7. Gall bladder A small muscular sac that is attach to the liver Stores the bile from the liver and pass it to the small intestine

8. pancreas An organ that lies behind the stomach Produce the pancreatic juice Secretes the hormone insulin and glucagon PANCREATIC JUICE -neutralize or weakens the acid in food inside the stomach before it moves to the small intestine INSULIN AND GLUCAGON –regulate the body’s sugar balance and metabolism

9. Small intestine a narrow corrugated tube that is about 7 meters and 2.5 cm. in diameter long The inner lining of the small intestine is folded into tiny fingerlike projections called villi Digests food which can be absorbed by the body THREE PARTS OF SMALL INTESTINE Duodenum 3. Ileum Jejunum

10. Large intestine About 1.5 meters long and 5 centimeters in diameter Absorbs water from undigested food and hold the undigested food for a while and then excrete it as feces RECTUM - end of the large intestine ANUS – exit of feces

11. H U T M O M O U T H

12. LALSM ESTNINETI SMALL INTESTINE

13. T O M S A C H S T O M A C H

14. R I V E L L I V E R

15. RELAG ESTNINETI LARGE INTESTINE

16. G U S E S O P H A E S O P H A G U S