Question

Tetanus is a(n): a. muscle contraction of sustained force resulting from repeated action potentials.b. contraction where the muscle does not change length.c. abnormal muscle contraction.d. contraction that slowly increases in force.e. contraction caused by a single action potential.

Answer 1

Answer: muscle contraction of sustained force resulting from repeated action potentials. (Option A)

Explanation: Tetanus is also called physiologic tetanus. Tetanus refers to the contraction of the muscle, which is established when the motor nerve that supply nerves to a skeletal muscle produces action potentials at a very high degree.

However, tetanic contraction is usually a normal process (such as when carrying a heavy box). Also, muscles can be shorten, lengthen or remain constant length during tetanic contractions.