7. Explain the difference between cross sectional area and physiologic cross sectional area to your classmate. Why is it so important that our muscles are pennate?
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It is a measure of the size or thickness of the muscle. On the other hand, physiologic cross-sectional area (PCSA) takes into account the angle at which the muscle fibers are oriented. It is a measure of the effective force-generating capacity of the muscle. Now, Show more…
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