When acetylcholine is released into the synapses of skeletal muscles,contraction can take place only when which of the following is present?

Question

Quizplus · Accepted Answer

Calcium ions are necessary for the contraction of skeletal muscles because they trigger the release of stored calcium from the sarcoplasmic reticulum, leading to muscle contraction. Sodium, potassium, and chloride ions also play roles in muscle contraction, but calcium is the necessary component for contraction to occur.

When Acetylcholine Is Released into the Synapses of Skeletal Muscles,contraction