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Does contraction of muscle cell last longer than the relaxation phase?
Wiki User
∙ 11y ago
No, relaxation lasts longer because Ca2+ ions must be actively transported back into the sarcoplasmic reticulum
Wiki User
∙ 11y ago
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What are the three stages of muscle cell contraction?
A Muscle Twitch is a single contraction of skeletal muscle. The three distinct phases are latent, contraction, and relaxation. Latent Phase: Is the interval from the stimulus application until the muscle begins to contract (shorten). Note that there is no traced activity during this phase, but there are some electrical and chemical changes taking place during this phase. Contraction Phase: This phase is when the muscle fibers shorten, the tracings will show during this phase (a) peak(s). Relaxation Phase: This phase is represented by the downward curve in your tracings, this is when the muscle is going back to its original state of relaxation and the muscle will once again lengthen
The period of a muscle twitch during which an action potential causes the release of calcium from the sarcoplasmic reticulum is the A stimulatory phase B lag phase C relaxation phase D cont?
D- contraction phase
The terms systole and diastole refer respectively to the?
contraction phase and relaxation phase of the ventricles
What is the alternating relaxation and contraction of the heart called?
Diastole is the relaxation phase. Systole is the contraction phase. If you put these phases together you have the Cardiac Cycle...
Which phase of a muscle twitch is eliminated in complete tetanus?
relaxation phase
What is the first phase after a stimulus in a muscle contraction?
Latent Phase
What is the contraction phase?
The contraction phase refers to the stage of a muscle action where the muscle fibers shorten and generate force. This is when the muscle is actively contracting and pulling on the tendons to create movement.
What is an example of an isotonic contraction?
An Isotonic contraction is when a muscle becomes longer or shorter to produce force and therefore an example is a bicep curl. During the downward phase your muscle (bicep) lengthens and during the upward phase your muscle (bicep) shortens.
What is second stimulus before relaxation causes increased force called?
Contraction phase
What muscle contraction occurs in the biceps brachii during the upward phase of the bicep curl?
a concentric contraction- a concentric contraction involves the muscle length, shortening during a contraction! YA-trick-YA!
What are the phases of the human heartbeat called this is a medical question?
The human heartbeat has two phases. The systolic phase corresponds with contraction, and the diastolic phase with relaxation.
Which phase of the heartbeat does the heart fill with blood?
during diastolic phase the chambers of heart get filled with blood systolic phase and diastolic phase are the phases oh heartbeat and diastolic phase is also known as resting phase.
