Cross Bridges

Multiple Choice

Cross bridges

A) extend between the A and I bands and bend to pull the bands together during muscle contraction.
B) are formed by the globular heads of the myosin molecules.
C) link troponin and tropomyosin to actin to form the thin filament.
D) extend from the thick filaments and bind to actin, then bend to pull the thin filaments in closer together during muscle contraction.
E) two of these answers.