Calcium Ions Are Released from the Sarcoplasmic Reticulum into the Cytosol

question 48

Multiple Choice

Calcium ions are released from the sarcoplasmic reticulum into the cytosol

• A)at the beginning of a contraction.
• B)in response to acetylcholine binding to Ca2+ release channels.
• C)by active transport using Ca2+ pumps in the SR membrane.
• D)after the contraction ends.
• E)All of these answers are correct.

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