Question

The plasma membrane of the muscle fibre is called

• A. sarcoplasm
• B. syncytial
• C. sarcolemma
• D. sarcoplasmic reticulum

Answer 1

The correct option is C sarcolemma

Each organised skeletal muscle in our body is made of a number of muscle bundles or fascicles held together by a common collagenous connective tissue layer called fascia.
Each muscle bundle contains a number of muscle fibres. Each muscle fibre is lined by the plasma membrane called sarcolemma enclosing the sarcoplasm.
Muscle fibre is a syncitium as the sarcoplasm contains many nuclei. The endoplasmic reticulum, i.e., sarcoplasmic reticulum of the muscle fibres is the store house of calcium ions.