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Anatomy of Digestive Tract

The digested ...

Question

The digested food from mouth is received by hollow muscular tube called _____.

A

oesophagus

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B

small intestine

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C

large intestine

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D

pharynx

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Solution

The correct option is A oesophagus
The process of taking in food is called ingestion. After ingestion, the food is chewed and broken down in the mouth. This food then passes through a hollow muscular tube-like structure called the oesophagus. Oesophagus shows rhythmic contraction and relaxation called peristalsis which helps to push the food (bolus) in forward direction towards the stomach.

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Q. When a person puts food in his mouth, then teeth cut it into small pieces, chew and grind it. The glands A in the mouth secrete a substance B which is mixed with the food by tongue. The substance B contains an enzyme C which starts the digestion of food in the mouth. The slightly digested food from the mouth goes down a tube D. The special type of movements E in the walls of tube D push the food into stomach for further digestion. The stomach wall secretes gastric juice containing three substance F, G and H. One of the functions of F is to kill bacteria which may enter the stomach with food. The substance G protects the inside layer of stomach from the damaging effect of substance F whereas substance H is an enzyme for digestion. The partially digested food then enters into small intestine for further digestion.
(a) What is (i) gland A (ii) substance B, and (iii) enzyme C?
(b) Name the tube D.
(c) What is the movement E known as?
(d) What are (i) F (ii) G, and (iii) H?

Q. The functions of the organs of digestion are listed below. Write the name of one organ from the lost against each phrase stomach, liver, small intestine, oesophagus, mouth, large intestine.
(a) no digestion takes place here _________________
(b) food is partly digested here in an acidic medium ________________
(c) digest and also absorbs food _______________
(d) takes food from the mouth to the stomach _______________
(e) starch is partly digested here ________________
(f) produces bile __________________

Q. The process by which animals make use of the digestive food is called
(a) absorption.
(b) digestion.
(c) ingestion.
(d) assimilation.

Q. The digested food from mouth is received by hollow muscular tube called _____.

Identify the organ that receives digested food from the mouth.

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