Question

Short answer type question :
1.(a) what is the role of mucus in stomach.
(b)what is the role of hydrochloric acid in stomach
2. What is alimentary canal? Name the various parts of alimentary canal and the associated glands.
3. Which part of the alimentary canal is involved in :
a.absorption of food?
b. Chewing of Food?
c. Killing of bacteria?
d. Complete digestion of food
e. Formation of faeces?
4. Which organ of the body secretes bile? Where is bile stored? What is the function of bile in the digestion of Food?
5. What are villi? Where are villi located? What is the function of villi?

Long answer type question :
1. What is meant by tooth decay? Name some of the foods which are the major cause of tooth decay. What are the various ways of preventing tooth decay?
2. What is meant by digestion? Name the various organs of the human digestive system. Also name the associated glands.
3. Name three things secreted by the inner lining of our stomach. Also state their functions. What is the function of large intestine?
5. What are incisors, canines, premolars and molars? State their functions.

Class - 7​

Answer 1

Answer: SHORT ANSWERS

1-A GASTRIC MUCUS

B -HYDROCHOLORIC ACID IN GASTRIC JUICE BREAKS DOWN FOOD AND DIGESTIVE ENZYMES AND SPILT UP PROTIENS

2-WHOLE PASSAGE ALONG WHICH FOOD PASSES THROUGH BODY FROM MOUTH TO ANUS DURING DIGESTION

VARIOUS PARTS - MOUTH , PHARYNX , ESOPHAGUS , STOMACH , SMALL AND LARGE INTESTINE , RECTUM AND ANUS

3- A SMALL INTESTINE  

B  MOUTH

C-STOMACH

D-SMALL INTESTINE

E- RECTUM

4 - GALL BLADDER SCRETES BILE

STORED IN GALLBLADDER

IT BREAKS INTO FATTY ACIDS WHICH CAN BE TAKEN INTO BODY BY DIGESTUVE TRACT

5 - VILLI ARE SMALL FINGGER LIKE PROJECTIONS FOUND INSIDE INNER WALLS OF SMALL INTESTINE . ITS FUNCTION IS TO INCREASE AREA OF

SMALL INTESTINAL WALL TO ABSORB FOOD

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