Name the ion released from sarcoplasmic reticulum when impulse travels from motor end plate over sarcolemma and then into the T-tubule and sarcoplasmic reticulum.
A) Magnesium
B) Sodium
C) Potassium
D) Calcium
Correct Answer:
D
Solution :
Sarcoplasmic reticulum is the store house of calcium ions in a muscle cell.