Name the parts of the pharynx involved with digestion.What are pharyngeal constrictors?
Name the parts of the pharynx involved with digestion.What are pharyngeal constrictors?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
Name the parts of the pharynx involved with digestion.
What are pharyngeal constrictors?
Expert Solution
Step 1
Deglutition refers to the act of swallowing that moves food from the mouth to the stomach. It is facilitated by saliva and mucus and involves the mouth, pharynx and esophagus. It occurs in three stages :
- Voluntary stage in which the bolus moves into the oropharynx.
- Pharyngeal stage which is an involuntary passage of the bolus through the pharynx into the esophagus.
- Esophageal stage which is an involuntary passage of the bolus through the esophagus into the stomach.
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