what is the shape of the voluntary muscles in an organism?

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Solution

Muscles can be described on the basis of shape (such as in the arrangement of muscle fibres):
Strap-shaped muscles - have parallel fibers and broad attachments (teres major)
Fusiform muscles - parallel fibers, but narrow tendons for attachments (biceps)
Pinnate muscles - diagonally arranged fibers that insert on the side of the muscle into a tendon. (subscapularis)

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