Contrast the epithelial type lining the intestines with the type lining the esophagus. For each, name the specific type and describe how its structure is perfectly suited to its function.
Contrast the epithelial type lining the intestines with the type lining the esophagus. For each, name the specific type and describe how its structure is perfectly suited to its function.
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
No substance can enter or leave the body without crossing an epithelium but epithelia vary in structure according to the function each serves. Contrast the epithelial type lining the intestines with the type lining the esophagus. For each, name the specific type and describe how its structure is perfectly suited to its function.
Expert Solution
INTRODUCTION::
Epithelium is considered as a protective covering of external and internal surfaces of the body.It consists of cells with no matrix in between them.These are avascular(no blood vessels) which will help in exchange of gases and nutrients by diffusion with blood vessels in underlying tissues.The major functions of the epitheilia are:
- Protecting underlying structures.
- secretion and absorption of substances.
- acting as barriers.
- Permitting the passage of substances.
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