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The interaction between actin and myosin filaments in muscle cells shortens the sarcomere during a contraction. Calcium ions released from the sarcoplasmic reticulum trigger this interaction, leading to the sliding of actin filaments over myosin filaments and shortening of the muscle fiber.

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1y ago

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Related Questions

What shortens muscle contraction?

myofibrils


A contraction in which the muscle shortens and work is done?

B. isotonic contraction


What is a concentric contraction?

concentric contraction is atype of muscle contraction which the muscle shortens while genrating aforce The muscle shortens to produce movement. A muscle contraction in which shortening occurs.


What band shortens during skeletal muscle contraction?

during skeletal muscle contraction ,I band and H zone shortens. Sarcomeres


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It is called concentric isotonic contraction.


In an isotonic contraction the muscle?

shortens while maintaining constant tension.


Does the Z line shorten during muscle contraction?

Yes, the Z line shortens during muscle contraction.


Is it true The more a muscle shortens during a contraction then the greater the power of the muscle?

No it is not true.


When you flex your arm you're performing a what contraction?

When you flex your arm, you're performing a concentric contraction. This type of contraction occurs when a muscle shortens while generating force, allowing you to lift or move a weight. During the flexion of your arm, the biceps brachii muscle contracts and shortens, resulting in the bending of the elbow.


When a muscle shortens it means what?

It is called a concentric contraction. The muscle gets shorter in preparation to do work.


When a muscle contracts?

shortens


What does contraction mean in medical terms?

contract or "contraction" is when a muscle fiber lengthens or shortens