34) When a muscle is unable to respond to stimuli temporarily, it is in which of the following periods? A) relaxation period B) refractory period C) latent period D) fatigue period
Biology · High School · Mon Jan 18 2021
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Correct answer is b ( refractory period)
Explanation: Muscle fatigue is defined as a decrease in maximal force or power production in response to contractile activity. It can originate at different levels of the motor pathway and is usually divided into central and peripheral components. Peripheral fatigue is produced by changes at or distal to the neuromuscular junction.
The refractory period is the time when the cell is repolarizing. An action potential can't be transmitted until there is a potential across the membrane again.