Read the following statements and select the correct option.
Statement 1: Deglutition starts as a reflex and tehn continues by voluntary action.
Statement 2: Oesophagus has smooth muscles in the beginning and striated muscles in the rest of its wall.

Options

A. Both statements 1 and 2 are correct.
B. Statement 1 is correct but statement 2 is incorrect.
C. Statement 1 is incorrect but statement 2 is correct.
D. Both statements 1 and 2 are incorrect.

Answer

D

Explanation

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.