Feathered in appearance (uni-, bi-, or multi- forms) describes

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Multiple Choice

Feathered in appearance (uni-, bi-, or multi- forms) describes

Explanation:
Feathered in appearance describes pennate muscles. The muscle fibers insert into a central tendon at oblique angles, giving a feather-like look. They can be unipennate (fibers on one side of the tendon), bipennate (fibers on both sides), or multipennate (several feathered sections around multiple tendinous branches). This arrangement increases the physiological cross-sectional area, so more fibers pull in parallel to generate greater force for a given muscle volume. The trade-off is less shortening and a smaller range of motion because the fibers run at angles, so the effective shortening along the tendon is reduced. Examples include unipennate, bipennate, and multipennate muscles, such as those often cited in anatomy texts.

Feathered in appearance describes pennate muscles. The muscle fibers insert into a central tendon at oblique angles, giving a feather-like look. They can be unipennate (fibers on one side of the tendon), bipennate (fibers on both sides), or multipennate (several feathered sections around multiple tendinous branches). This arrangement increases the physiological cross-sectional area, so more fibers pull in parallel to generate greater force for a given muscle volume. The trade-off is less shortening and a smaller range of motion because the fibers run at angles, so the effective shortening along the tendon is reduced. Examples include unipennate, bipennate, and multipennate muscles, such as those often cited in anatomy texts.

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