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

Question

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.

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.