A patient has researched muscles on the internet.Which information indicates the patient has a good understanding? The molecule that prevents a muscle contraction from occurring when the muscle is at rest is:
A) Calcium
B) Troponin-tropomyosin
C) Actin
D) Myosin

Question

Quizplus · Accepted Answer

Contraction begins as the calcium ions combine with troponin,a reaction that overcomes the inhibitory function of the troponin-tropomyosin system.
Calcium does not prevent contraction; it could facilitate it.
Actin does not prevent contraction; it facilitates it.
Myosin facilitates contraction.

A Patient Has Researched Muscles on the Internet