What is the functional unit of a skeletal muscle called?
A) a myofibril
B) the sarcoplasmic reticulum
C) a sarcomere
D) a myofilament

Question

Quizplus · Accepted Answer

The functional unit of a skeletal muscle is called a sarcomere, which is the basic unit of muscle contraction. A myofibril is a long cylindrical structure within a muscle cell that contains sarcomeres. The sarcoplasmic reticulum is a specialized endoplasmic reticulum that stores calcium ions for muscle contraction. Myofilaments are the protein filaments within sarcomeres that slide past each other during muscle contraction.

What Is the Functional Unit of a Skeletal Muscle Called