Muscle Excitation/Contraction (E/C Coupling)
Physiology
>
Musculoskeletal
>
Skeletal Muscle
Q. Which of the following occurs first during E/C coupling?
a
Tropomyosin shifts
b
Extracellular calcium enters the intracellular fluid
c
Calcium binds to troponin
d
Myosin head binds to actin molecule
e
An action potential propagates through the muscle cell T-tubules.
Log In
or
Start Your Free Trial
to view the answer.