PHYSIOLOGY
SYNAPTIC PHYSIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lag/latent
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relaxation
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contraction
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tetanus
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refractory
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Detailed explanation-1: -The latent period is the time lag between the application or reception of the stimulus and the onset of contraction.
Detailed explanation-2: -The period between action potential initiation and the beginning of contraction is called the latent period; excitation-contraction coupling occurs within the latent period.
Detailed explanation-3: -The latent period is a short delay (1-2 msec) from the time when the action potential reaches the muscle until tension can be observed in the muscle.
Detailed explanation-4: -A single muscle twitch has a latent period, a contraction phase when tension increases, and a relaxation phase when tension decreases. During the latent period, the action potential is being propagated along the sarcolemma.
Detailed explanation-5: -Depolarisation and calcium ion release. Actin and myosin cross-bridge formation. Sliding mechanism of actin and myosin filaments. Sarcomere shortening (muscle contraction)