What generally triggers the release of calcium ions by ryanodine receptors? A)potassium efflux B)sodium influx C)an action potential D)IP₃ release E)IP₃ uptake

Question

Quizplus · Accepted Answer

The release of calcium ions by ryanodine receptors is triggered by the presence of an action potential. This causes a conformational change in the receptor, leading to the release of calcium ions from the sarcoplasmic reticulum in muscle cells. Potassium efflux and sodium influx do not directly trigger the release of calcium ions from ryanodine receptors. IP₃ release and uptake are not relevant to the function of ryanodine receptors.

What Generally Triggers the Release of Calcium Ions by Ryanodine