The refractory period of cardiac muscle

a. lasts almost as long as the contraction period.
b. is much longer than the refractory period in skeletal muscle.
c. allows tetanic contraction of the heart to occur to ensure smooth, coordinated ejection of blood from the ventricles.
d. both (a) and (b) above.
e. all of these answers.


D

Anatomy & Physiology

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