A Sarcomere is Best Described As

Question

A sarcomere is best described as
A)a part of the sarcoplasmic reticulum.
B)a group of fascicles.
C)a group of muscle fibers.
D)a unit within a muscle fiber.

Accepted Answer

A sarcomere is the functional unit within a muscle fiber that is responsible for muscle contraction. It is defined as the segment of a myofibril between two adjacent Z-lines and contains all the structures necessary to generate force and movement.