The Calcium Ions Released into the Cytosol During Excitation of Skeletal

Question

The calcium ions released into the cytosol during excitation of skeletal muscle bind to
A) troponin.
B) tropomyosin.
C) actin.
D) myosin.
E) transverse tubules.

Accepted Answer

The binding of calcium ions to troponin causes a conformational change in tropomyosin, allowing myosin to bind to actin and initiate muscle contraction.