Describe the roles of ATP in the sliding filament mechanism of skeletal muscle contraction. (b) Describe the basic sequence of events that occurs as an action potential arrives at the neuromuscular junction and is transmitted to the

Describe the roles of ATP in the sliding filament mechanism of skeletal muscle contraction. (b) Describe the basic sequence of events that occurs as an action potential arrives at the neuromuscular junction and is transmitted to the

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 12UC

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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

(a) Describe the roles of ATP in the sliding filament mechanism of skeletal muscle contraction.

(b) Describe the basic sequence of events that occurs as an action potential arrives at the neuromuscular junction and is transmitted to the muscle cell for contraction.

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