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Does increasing the stimulus voltage affect the muscle force? Explain

Explain what is occurring in each phase of a muscle twitch, especially as it relates to excitation-contraction coupling

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Bunny Greenfelder
Bunny GreenfelderLv2
28 Sep 2019

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Related questions

there are 4 stages in muscle contraction: excitation, excitation-contraction coupling, contraction, and relaxation.
a) briefly describe the molecular process of excitation, beginning at the synaptic bulb of the neuron. how does this affect the muscle fiber?
b) how is calcium released from the sarcoplasmic reticulum during excitation-contraction coupling, and how do troponin and tropomyosin regulate the interaction between myosin and actin
c) describe the events of one cross-bridge cycle and how this shortens the sarcomere.
d) following contraction, what events must occur to allow the muscle to relax?

Question 1: Explain how a stimulus voltage applied to the gastrocnemius muscle caused its’ contraction (ie, how does the stimulus activate the muscle cells – ie how is an action potential generated). How can the force of contraction be elevated by increases in voltage applied to the muscle (include a discussion of motor unit recruitment)?

the entire process of coordinated, voluntary muscle contraction is summed up as excitation-contraction coupling. Why are these two things coupled. and what,specifically, is responsible for bring education and contraction together in the muscle cell? in other words,what physically connects, or bridges,the two parts?

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