This structure of a skeletal muscle cell extends from Z line to Z line.
A) sarcolemma
B) sarcomere
C) sarcoplasmic reticulum
D) A band
E) I band

Question

Quizplus · Accepted Answer

The sarcomere is the basic unit of a skeletal muscle cell, extending from one Z line to the next Z line. It is composed of thick and thin filaments, which slide past each other during muscle contraction. The other choices (A, C, D, E) are all components of a skeletal muscle cell, but they do not extend from Z line to Z line.

This Structure of a Skeletal Muscle Cell Extends from Z