Medical Quiz
Muscle Anatomy Quiz

Why are calcium ions necessary for skeletal muscle contraction?

A. Calcium ions cause ATP binding to actin.

B. Calcium ions release the inhibition on Z discs.

C. Calcium ions trigger the binding of myosin heads to actin filaments.

D. Calcium ions increase the speed of the action potential transmitted along the sarcolemma.

Select your answer:
A  B  C  D  E 


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Other quiz: Homeostasis

Identify the stimulus event.

Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed and the person begins to sweat and their body temperature decreases.

A. body temperature increases

B. person begins to sweat

C. temperature change is noticed

D. person begins to exercise