Which of the following contractions is seen in an isolated muscle fiber in the laboratory but plays a minimal role in normal muscle activity?
A) Isometric
B) Twitch
C) Isotonic
D) Tectonic

Question

Quizplus · Accepted Answer

Twitch contractions are seen in isolated muscle fibers in the laboratory, but they play a minimal role in normal muscle activity. Isometric and isotonic contractions are more relevant in everyday muscle function, with isometric contractions involving no change in muscle length and isotonic contractions involving movement through a range of motion at a constant load. Tectonic contractions are not a recognized type of muscle contraction.

Which of the Following Contractions Is Seen in an Isolated