Question

Which of the following is not a part of a muscle fibre ?

• A. Sarcolemma
• B. Sarcoplasm
• C. Sarcoplasmic reticulum
• D. Fascicle

Answer 1

The correct option is D Fascicle

Skeletal muscle is made up of bundles of muscle fibres. Each bundle of muscle fibre is called a fascicle. Each muscle fibre is an individual cell with many nuclei and is covered by a plasma membrane called the sarcolemma.
The sarcolemma encloses the sarcoplasm. The sarcoplasm is the cytoplasm of the muscle fibre. A muscle fibre also has extensive endoplasmic reticulum, which is called sarcoplasmic reticulum; the sarcoplasmic reticulum is involved in storing calcium ions.