Muscle Mastering A &P

In the figure above, which structure corresponds to a single skeletal muscle cell? A, B, C, D?

The connective tissue that covers structure A is continuous with which of the following?

The smallest contractile unit within skeletal muscle would correspond to the distance between which two points in the figure? 1 and 7 3 and 5 1 and 3 2 and 6

Which structure corresponds to a single fascicle? A B C D

Which of the following is the smallest structural unit in which the distinctive striated bands characteristic of skeletal muscle are observed? A B C D

Between which two points would there be substantial amounts of both the proteins actin and myosin? 2 and 3 1 and 2 3 and 5 None of the listed responses is correct.

The region between which two points corresponds to the entire A band? 2 and 6 3 and 5 2 and 3 1 and 2

The region between which two points corresponds to the I band? 3 and 5 2 and 5 2 and 3 None of the listed responses is correct.

Which pathway for regenerating ATP provides the majority of the energy used for muscle activity during 30 minutes of light to moderate exercise?

Which protein inhibits interaction between actin and myosin to prevent skeletal muscle contraction; and which ions remove the inhibition?