A) Deglutition
B) Peristalsis
C) Systole of the ventricles
D) Dilation of pupil of the eye
Correct Answer: A
Solution :
: Swallowing or deglutition is the process by which food is transferred from the mouth to the oesophagus (gullet). Voluntary raising of the tongue forces food backwards towards the pharynx. This stimulates reflex actions m which the larynx is closed by the epiglottis and the nasal passages are closed by the soft palate, so that food does not enter the trachea (windpipe). Lastly, food moves down the oesophagus by peristalsis and gravity.
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