Exam 8: Muscle Physiology

The corticospinal system controls fine, discrete, voluntary body movements.

Which protein contributes to the elasticity of the sarcomere?

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Can exist over a variety of lengths with little change in tension.

Which is characteristic of cross bridges?

Which of the following changes in banding pattern occur during muscle contraction?

Indicate which type of muscle is associated with the property in question by writing the appropriate letter in the blank using the answer code below: -Is innervated by the autonomic nervous system.

Indicate which bands are being described in each statement by writing the appropriate letter(s) in the blank using the answer code below (more than one answer may apply): -Shortens during muscle contraction.

The ____________________ component is the noncontractile tissue part of a muscle.

The actin filaments in sarcomere contain cross bridges.

Order the following muscle cell components from larger to smaller 1 troponin 2 myofibril 3 sarcomere 4 thin filament 5 muscle fiber

Match muscle term with correct characteristic. -creatine phosphate

Gradation of muscle contraction can be accomplished by stimulating variable portions of each motor unit.

The oxygen debt must be "paid" off following rigorous muscular activity because

Indicate which of the characteristics in question apply to each of the muscle fiber types by using the following answer code (more than one answer may apply): -Is found predominantly in muscles designed for endurance.

A single smooth muscle contraction may last as long as 3 seconds.

Stretch reflexes are important

Indicate which bands are being described in each statement by writing the appropriate letter(s) in the blank using the answer code below (more than one answer may apply): -Composed of thin filaments only.

During the ____________________ stroke, cross bridges of myosin pull the actin filaments in the sarcomere.

Indicate which bands are being described in each statement by writing the appropriate letter(s) in the blank using the answer code below (more than one answer may apply): -Positioned on either side of Z line.

The first means by which ATP is produced at the onset of contractile activity is