The structure that serves as an attachment for thin filaments and demarcates the boundary between sarcomeres in skeletal muscle is the
A) A band
B) H zone
C) I band
D) M line
E) Z line

Question

Quizplus · Accepted Answer

The Z line is the structure that serves as an attachment for thin filaments and demarcates the boundary between sarcomeres in skeletal muscle. The A band is where thick filaments are located, the H zone is the area within the A band where there are no thin filaments present, the I band is the area where there are no thick filaments present, and the M line is the area in the center of the A band where adjacent thick filaments are linked together.

The Structure That Serves as an Attachment for Thin Filaments