Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Question
Chapter 43.1, Problem 1SB
Summary Introduction
To review:
The mechanism by which muscle contraction occurs in response to a stimulus form the nervous system.
Introduction:
Skeletal muscles in humans and vertebrate are attached to the bones by tendons. Skeletal muscle helps in movement and maintenance of body posture and position. The cells of the skeletal muscles are long sized, cylindrical shaped and multinucleated.
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Chapter 43 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 43.1 - Prob. 1SBCh. 43.1 - Prob. 2SBCh. 43.1 - Prob. 3SBCh. 43.2 - Prob. 1SBCh. 43.2 - Prob. 2SBCh. 43.3 - Prob. 1SBCh. 43.3 - Prob. 2SBCh. 43 - Prob. 1TYKCh. 43 - Prob. 2TYKCh. 43 - Prob. 3TYK
Ch. 43 - Prob. 4TYKCh. 43 - Prob. 5TYKCh. 43 - Prob. 6TYKCh. 43 - Which of the following is not an example of a...Ch. 43 - Endoskeletons: a. protect internal organs and...Ch. 43 - Prob. 9TYKCh. 43 - Prob. 10TYKCh. 43 - Prob. 11TYKCh. 43 - Prob. 12TYKCh. 43 - Prob. 13TYKCh. 43 - Prob. 14TYKCh. 43 - Prob. 15TYKCh. 43 - Prob. 1ITDCh. 43 - Prob. 2ITDCh. 43 - Prob. 3ITDCh. 43 - Prob. 4ITD
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- In a general sense, how do skeletal muscles produce movement?arrow_forwardWhat is a motor unit? Why does a rapid series of muscle twitches yield a stronger overall contraction than a single twitch?arrow_forwardWhat are some examples of movement created by the contraction of sarcomeres of the muscle cells?arrow_forward
- Why does repeated stimulation of the muscle (at maximum stimulus) before it has completely recovered from the previous contraction lead to increasing force of contractions?arrow_forwardSlow twitch muscle fibers are characterized by all of the following EXCEPT: O a) used in endurance type of activities O b) contract rapidly and forcefully Oc) resistant to fatigue O d) have a direct relationship to the oxidative energy systemarrow_forwardWhat are the two neurotransmitters involved in excitation and inhibitation of muscles?arrow_forward
- Which of the following is not true when comparing slow twitch red and fast twitch white muscle fibers? Question 2 options: a) Red contain more mitochondria than white b) Red contain more myoglobin than white c) Red contracts more slowly than white d) Red contain more glycogen stores than whitearrow_forwardIn skeletal muscle contraction, calcium ions apparently act to: Question 8 options: a) block the channels of the voltage gated sodium channels b) move the tropomyosin so it’s no longer blocking the active sites of the actin c) release the inhibition on Z discs d) cause ATP binding to actinarrow_forwardWhat is the importance of acetylcholinesterase in muscle cell contraction?arrow_forward
- what happens to acetylcholine to stop muscle contraction? What happens to actin when calcium is gone?arrow_forwardWhat is Whole-Muscle Contraction?arrow_forwardWhat is the time relationship between a skeletal muscle fiber action potential and the resulting contraction and relaxation of the muscle fiber?arrow_forward
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