Structurally, a sarcomere is
A) the region between two thick filaments.
B) the region between two Z lines.
C) an array of Z units.
D) the region between a thick filament and the next thin filament.

Question

Quizplus · Accepted Answer

A sarcomere is defined as the region between two Z lines or discs, which mark the boundaries of each sarcomere within a myofibril. The thick filaments are located in the center of the sarcomere, while the thin filaments are attached to the Z lines. Therefore, option B is the correct answer.

Structurally, a Sarcomere Is