PHYSIOLOGY
SYNAPTIC PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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latent period
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contractile period
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relaxation period
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Systolic Period
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Detailed explanation-1: -The cardiac action potential lasts approximately 200 ms and is divided into 5 phases: (4) resting, (0) upstroke, (1) early repolarization, (2) plateau, and (3) final repolarization.
Detailed explanation-2: -A muscle twitch has a latent period, a contraction phase, and a relaxation phase. A graded muscle response allows variation in muscle tension.
Detailed explanation-3: -This classification technique leads to 3 fiber types: fast-twitch glycolytic (FG), fast-twitch oxidative (FOG), and slow-twitch oxidative (SO). Although a good correlation exists between type I and SO fibers, the correlations between type IIA and FOG and type IIB and FG fibers are more varied.
Detailed explanation-4: -A single action potential from a motor neuron will produce a single contraction in the muscle fibers innervated by the motor neuron. This isolated contraction is called a twitch. A twitch can last anywhere from a few milliseconds to 100 milliseconds, depending on the muscle fiber type.