During contraction, the length of myofibrils shrink.

Define and describe the phenomenon of excitation-contraction coupling. Be sure to include not only what E-C coupling is, but what it does.

Figure 9.2 Using Figure 9.2, match the following names to the correct letter (You may use an answer more than once):

Smooth muscle fibers have only one nucleus and no sarcomeres.

Excess postexercise oxygen consumption refers to a muscle fiber’s need to ___________ after vigorous exercise.

Excess postexercise oxygen consumption refers to a muscle fiber’s need to ___________ after vigorous exercise.

Match the following terms to the correct definition (you may use an answer more than once):

Match the following ways of generating ATP in muscle fibers to the correct speed/duration of their use (you may use an answer more than once):

Describe the sliding filament model.  In your description, include specific examples of which parts of the muscle fibers are moving (and not moving) during contraction.

A marketing department that promises delivery faster than the production department’s ability to produce is an example of a lack of understanding of