What is the functional unit of skeletal muscle

Question

Quizplus · Accepted Answer

The functional unit of skeletal muscle is the sarcomere, which is the area between two Z lines. It contains the overlapping thick and thin filaments that generate contraction. A is incorrect because the largest contractile component of a muscle fibre is the myofibril, which is made up of multiple sarcomeres. C is incorrect because the sarcoplasmic reticulum is a specialized organelle that stores calcium ions and releases them to initiate muscle contraction. D is incorrect because the I band is a light band in the sarcomere that contains only thin filaments.

What Is the Functional Unit of Skeletal Muscle