The types of muscle that make up each third of the esophagus (from pharynx to stomach) are characterized in the following way: upper third is skeletal muscle, middle third is mixed skeletal and smooth muscle, and the lower third is smooth muscle. What do you think might be true of esophagus function that could help you to remember this histological “floor plan”?
The types of muscle that make up each third of the esophagus (from pharynx to stomach) are characterized in the following way: upper third is skeletal muscle, middle third is mixed skeletal and smooth muscle, and the lower third is smooth muscle. What do you think might be true of esophagus function that could help you to remember this histological “floor plan”?
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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The types of muscle that make up each third of the esophagus (from pharynx to stomach) are characterized in the following way: upper third is skeletal muscle, middle third is mixed skeletal and smooth muscle, and the lower third is smooth muscle. What do you think might be true of esophagus function that could help you to remember this histological “floor plan”?
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