MUSCLE
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are generally happy to be alive
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Muscles are eager to help
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They respond to a stimulus.
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None of the above
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Detailed explanation-1: -The correct option is B excitability. Muscles of the body receive signals (stimuli) from brain. Excitability of muscles signifies how quickly they respond to stimuli. Quicker the response, more will be the excitability of muscles.
Detailed explanation-2: -Excitability, or the ability to respond to certain stimuli by producing action potentials or impulses of electrical signal. The stimuli triggering action potentials are chemicals such as neurotransmitters released by neurons or hormones distributed by the blood.
Detailed explanation-3: -All cells exhibit a voltage difference across the cell membrane. Nerve cells and muscle cells are excitable. Their cell membrane can produce electrochemical impulses and conduct them along the membrane. In muscle cells, this electric phenomenon is also associated with the contraction of the cell.