Which region of the sarcomere contains only actin thin filaments or microfilaments?
A)A bands
B)H zones
C)I bands
D)Z lines
E)M lines

Question

Quizplus · Accepted Answer

The I band is the region of the sarcomere that contains only actin thin filaments, while the A band contains both actin and myosin thick filaments, the H zone contains only myosin thick filaments, the Z lines mark the boundary of each sarcomere, and the M lines anchor the myosin filaments in place.

Which Region of the Sarcomere Contains Only Actin Thin Filaments