The sarcomere is defined as
A) Everything in the A band
B) Everything from M-line to the adjacent Z-disc
C) Everything from M-line to the adjacent M-line
D) Everything in the I band
E) Everything from Z disc to the adjacent Z disc

Question

Quizplus · Accepted Answer

The sarcomere, the basic contractile unit of muscle fiber, is defined as the segment between two neighboring Z discs. This encompasses the entire unit of myofibril necessary for muscle contraction, including both the A and I bands as well as the H zone and M line within its boundaries.

The Sarcomere Is Defined as