Answered: puborectalis muscle: A. Part of the…

puborectalis muscle: A. Part of the levator ani muscle B. Acts like a sling around the rectum C. Contracts to facilitate defecation D. A and B E. All of the above

Body Structures & Functions Updated

13th Edition

ISBN:9780357191606

Author:Scott

Publisher:Scott

Chapter7: Muscular System

Section: Chapter Questions

Problem 10RQ

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Concept explainers

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.

Question

The puborectalis muscle:

A. Part of the levator ani muscle
B. Acts like a sling around the rectum
C. Contracts to facilitate defecation
D. A and B
E. All of the above

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