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

Calcium ions released into the cytosol during excitation of skeletal muscle bind to troponin, which leads to a conformational change in the troponin-tropomyosin complex, allowing myosin to bind to actin and initiate muscle contraction.