The Region of the Sarcomere Containing the Thick Filaments Is

Question

The region of the sarcomere containing the thick filaments is the
A) Z line.
B) M line.
C) H band.
D) A band.
E) I band.

Accepted Answer

The region of the sarcomere containing the thick filaments is the A band, which extends the entire length of the thick filaments and includes some overlap with the thin filaments. The H band is a region within the A band where there is no overlap with thin filaments, and the M line is the central point within the H band where thick filaments are linked together. The Z line is the boundary between adjacent sarcomeres, and the I band is the region containing thin filaments only.