((a)) (b) ons in smooth muscle cells depend on which one of the following activation steps? Ca2+-activated phosphorylation of myosin-II Ca2+ binding to troponin (c) GTP binding to myosin-II (d) Actin polymerization Explain:

((a)) (b) ons in smooth muscle cells depend on which one of the following activation steps? Ca2+-activated phosphorylation of myosin-II Ca2+ binding to troponin (c) GTP binding to myosin-II (d) Actin polymerization Explain:

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter8: Muscle Physiology

Section: Chapter Questions

Problem 10RE

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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

ctions in smooth muscle cells depend on which one of the following activation steps?
Ca2+-activated phosphorylation of myosin-II
Ca²+ binding to troponin
GTP binding to myosin-II
Actin polymerization
(b)
(c)
(d)
Explain:

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