Neurotransmitters are released upon stimulation from a nerve impulse by the:

The study of muscle contraction is called

The property of muscles in which a state of partial contraction is maintained through the whole muscle is called

The skin aids the urinary system by excreting water and small amounts of other wastes through perspiration.

Which of the following obeys the all-or-none law?

A skeletal muscle twitch differs from a tetanic contraction in that:

Which of the following bones forms the back and base of the cranium?

Which of the following is NOT a protective function of the skin?

The wrist bones are actually:

Acetylcholine is: