Exam 9: Muscular System: Histology and Physiology

In a laboratory experiment, the resting membrane potential of a muscle is measured and is found to be more negative. Which of the following has occurred?

Visceral smooth muscle

Acetylcholine is released from the presynaptic terminal by the process of

Identify the statement concerning skeletal muscle that is true.

Depolarization of the plasma membrane occurs when there is a rapid influx (inflow) of

Which type of muscle tissue is autorhythmic?

Increased strength of a trained muscle is due to

Which of the following actions is caused by contraction of skeletal muscle?

Which of the following statements concerning types of muscle contractions is false?

The outside of the resting plasma membrane is ________ relative to the inside of the resting plasma membrane.

Excitation-contraction coupling begins with

A condition in which stimuli occur so rapidly that there are no intervening relaxations between contractions is called

T tubules

Tetanus of muscles is described as

Muscle tone

An isotonic contraction is described as

Which of the following statements regarding the sliding filament model is false?

Susan slipped on the ice and was unable to be fully mobile for several days. What disruption to homeostasis would you predict she experienced during her immobile period in terms of her muscular system?

Which of the following statements about muscle tissue is true?

In a contracted muscle, the A bands narrow because the length of the myosin myofilaments changes.