Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 6, Problem 6CR
Summary Introduction
To review:
The summation and the reason for its occurrence.
Introduction:
Muscle contracts with the help of calcium that is released into the cell from the sarcoplasmic reticulum. These ions bind to the troponin and make actin protein available to bind to myosin protein to cause contraction.
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Define a motor unit. Of what physiological advantage is a small motor unit arrangement in skeletal muscle?
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Explain how skeletal muscle stimulation produces a sustained contraction.
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Chapter 6 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 6 -
1. Do you think we should continue to try to...Ch. 6 - Prob. 2QCCh. 6 - Describe how muscle contraction can resist...Ch. 6 - Describe how a muscle's origin and insertion...Ch. 6 - Describe the roles of calcium in muscle...Ch. 6 -
4. Explain what causes rigor mortis.
Ch. 6 - Prob. 5CRCh. 6 - Prob. 6CRCh. 6 - Prob. 7CRCh. 6 -
8. Compare and contrast how a constant degree of...
Ch. 6 - Prob. 9CRCh. 6 - Prob. 10CRCh. 6 - Prob. 1TYCh. 6 -
2. Which of the following choices arranges the...Ch. 6 - All of the following are functions of the muscular...Ch. 6 -
4. Which of the following happens during muscle...Ch. 6 -
5. Botulism toxin inhibits the release of...Ch. 6 - The sliding filament mechanism describes the...Ch. 6 -
7. What is the first and most direct energy...Ch. 6 - As you clasp your hands in front of you and push...Ch. 6 -
9. All of the following may happen in response to...Ch. 6 - Which of the following is/are characteristic of...Ch. 6 - Which of the following is the site of calcium ion...Ch. 6 - What is the role of ATP in muscle function? a. ATP...Ch. 6 -
13. Which of the following would have motor units...Ch. 6 - Which type(s) of muscle cells can contract the...Ch. 6 - Prob. 15TYCh. 6 - Prob. 1AWKCh. 6 - Why do you think it is generally accepted medical...Ch. 6 - Prob. 3AWKCh. 6 - What would happen to a muscle if one of its...Ch. 6 - Prob. 5AWKCh. 6 - Prob. 6AWKCh. 6 - Prob. 7AWKCh. 6 - Prob. 8AWK
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- Describe the series of events that lead to smooth muscle contraction even in the absence of troponin.arrow_forwardDescribe the neural control of skeletal muscle contraction.arrow_forwardDescribe in details the biochemical and mechanochemical series of events that enables motor neurons to trigger muscle contraction, using the biceps brachii as an example.arrow_forward
- Identify the steps that show how an action potentialproduced in the motor end-plate of the neuromuscularjunction eventually results in contraction of the muscle fiber.arrow_forwardExplain in detail cholinergic/acetylcholine receptors and what role they plain in Smooth muscle contraction. Provide intraceullar mechanism.arrow_forwardexplain what a motor unit is and how it relates to musclecontraction;arrow_forward
- Explain how optimal skeletal muscle force (high muscle tension) can be achieved during a high intensity exercise. (Mention and explain how wave summation, motor recruitment summation, muscle length, and type of muscle fibers activated can affect muscle force).arrow_forwardList the three types of skeletal muscle fibers, and describe theanatomic and functional characteristics of each.arrow_forwardDescribe the three steps (in detail) and the regions where these steps occur required for a skeletal muscle contraction to occur. Diagram(s) is (are) encouraged.arrow_forward
- Describe factors that influence the force, velocity, and duration of skeletal muscle contraction.arrow_forwardIdentify the nature and physiological significance of the series-elastic component of muscle contraction.arrow_forwardDescribe the innervation of skeletal muscle fibers at neuromuscular junctions. Define a motor unitarrow_forward
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