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Read the following statements and select the correct option.

Statement 1: Deglutition starts as a reflex and then continues by voluntary action.

Statement 2: Oesophagus has smooth muscles in the beginning and striated muscles in the rest of its wall.

 

Option: 1

Both statements are correct

 


Option: 2

Statement 1 is correct but statement 2 is incorrect

 


Option: 3

Statement 1 is incorrect but statement 2 is correct

 


Option: 4

Both the statements are incorrect


Answers (1)

best_answer

Deglutition (swallowing ) starts as a voluntary action in the mouth and then continues as an involuntary action. Striated muscle surrounds the upper one-third of the oesophagus and smooth muscle surrounds the lower two thirds.

Since the actual swallowing begins as an involuntary reflex.

Statement 1 is incorrect.

The oesophagus wall is composed of striated muscle in the upper part, smooth muscle in the lower part, and a mixture of the two in the middle.  

Hence, statement 2 is incorrect.

Hence, the correct is (d).

 

 

Posted by

Ritika Kankaria

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