In response to action potentials arriving from the transverse tubules, the sarcoplasmic reticulum releases
A) acetylcholine.
B) sodium ions.
C) potassium ions.
D) calcium ions.
E) all of the above

Question

Quizplus · Accepted Answer

The release of calcium ions from the sarcoplasmic reticulum is necessary for muscle contraction. Acetylcholine is a neurotransmitter released at the neuromuscular junction to initiate the action potential, while sodium and potassium ions are involved in the generation and propagation of the action potential, but they are not directly released from the sarcoplasmic reticulum.

In Response to Action Potentials Arriving from the Transverse Tubules