Which of the following types of abnormal contractions of skeletal muscle is caused by a twitch of an entire motor unit and is visible under the skin?

Question

Quizplus · Accepted Answer

Fasciculation is an abnormal contraction of skeletal muscle caused by a twitch of an entire motor unit. It is visible under the skin and often mistaken for a tic or tremor. Fibrillation, on the other hand, is a spontaneous contraction of a single muscle fiber and is not visible under the skin. Cramps are painful, involuntary contractions of skeletal muscles, while tics and tremors refer to involuntary movements that are not necessarily caused by muscle contractions.

Which of the Following Types of Abnormal Contractions of Skeletal