Chapter 11 questions

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pennate

Skeletal muscles in which the fascicles are arranged to form a common angle with the tendon are _____ muscles.

convergent

Muscles that pull in several different directions, depending on which portion of the muscle is stimulated are called____ muscles.

50

Tension in a parallel muscle depends on the total number of myofibrils. Therefore, the cross section of the muscle is directly related to tension. One square inch of cross section develops about_____ pounds of tension.

D. All are correctly matched

Which of the following is incorrectly matched? A. unipennate: all muscle fibers are on 1 side of the tendon (extensor digitorum) B. bipennate: muscle fibers on both sides of the tendon (rectus femoris) C. multipennate: tendon branches within the muscle (deltoid) D. all are correctly matched

raphe

a thin band of collagen fibers is called a

70

most skeletal muscles can shorten to roughly______% of their ideal resting length.

circular

muscles that act as valves to open and close openings are _____ muscles.


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