In a sarcomere, cross-bridge attachment occurs specifically in the
A) zone of overlap.
B) A band.
C) I band.
D) M line.
E) H band.

Question

Quizplus · Accepted Answer

Cross-bridge attachment occurs specifically in the zone of overlap, which is the region where the thin and thick filaments overlap in the sarcomere. This is where the myosin heads of the thick filaments bind to the actin filaments of the thin filaments to initiate muscle contraction.

In a Sarcomere, Cross-Bridge Attachment Occurs Specifically in the