The major source of calcium for contraction of skeletal muscle is:
ECF
Cytosol
Mitochondria
Sarcoplasmic reticulum (SR)
Ans. D. sarcoplasmic reticulum (SR)Skeletal muscle depends on the SR as the major source of calcium. Cardiac muscle and smooth muscle depend on influx of calcium from ECF and Ca-induced calcium release for contraction.
General