PHYSIOLOGY
SYNAPTIC PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A minimal strength stimulus needed to elicit contraction of a single muscle fiber is called ____ stimulus
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partial
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threshold
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tetanic
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twitch
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Explanation:
Detailed explanation-1: -The minimal strength of stimulation needed to elicit a muscle contraction is called the threshold stimulus. A neurotransmitter substance crosses the synaptic cleft between a nerve and muscle fiber, and stimulates the nerve to have an action potential.
Detailed explanation-2: -The minimum strength required for the stimulus to initiate the response of muscle contraction is known as the threshold stimulus.
Detailed explanation-3: -The contraction of the muscle fiber is generally stimulated by an nerve impulse and a single short stimulus is known as a twitch.
Detailed explanation-4: -A twitch occurs when one muscle fiber contracts in response to a command (stimulus) by the nervous system.
There is 1 question to complete.