The area of the sarcomere that is the light region between two successive A-bands is the
A) Z line.
B) M line.
C) I band.
D) myofibril.
E) H band.

Question

Quizplus · Accepted Answer

The light region between two successive A-bands is the I band, which contains only thin actin filaments and is bisected by the Z line. The M line is in the center of the A-band and anchors the thick myosin filaments. The H zone is the region in the center of the A-band where there are no thin actin filaments. So the correct choice is C.

The Area of the Sarcomere That Is the Light Region