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Draw the length-force curve for a sarcomere in a typical striated muscle. Label the axes and...

Draw the length-force curve for a sarcomere in a typical striated muscle. Label the axes and indicate the location of resting length. Explain the physiological basis for the shape of the curve.

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Answer #1

The resting sarcomere is about 2.2 μm long

The number of cross bridges which can be formed is decreased in a linear fashion with increasing length as sarcomere is over-stretched. The force generated is maximum with lengths close to the resting length of the muscle. A finite amount of time is required for the cross bridges to attach as filaments slide over one another. So, the muscle shortens over increasing velocity.

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