STD 12 - 7. human health and disease — NEET STD 11 Science — Question

$(I)$ In human body, it is made of number of muscle bundles.

$(II)$ Muscle bundles contains a number of muscle fibers and fiber is lined by the sarcollemma.

$(III)$ In Muscle fiber, sarcoplasm contains only one nucleus.

$(IV)$ In muscle fiber, sarcoplasmic reticulum is the store house of calcium ions.