Like skeletal muscle, cardiac muscle:
A) relies on calcium and ATP to contract
B) is controlled by the stimulation of motor units
C) uses temporal summation to increase contractile force
D) has both fast twitch and slow twitch muscle fiber types
E) is multinucleate
Correct Answer:
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Q15: Which of these is NOT one of
Q18: Coronary arteries may become blocked
A) by a
Q19: The tricuspid valve
A) is the location of
Q21: Cardiac muscle cells
A) twist when they contract
B)
Q22: Papillary muscles:
A) contract when the ventricles relax
B)
Q22: Papillary muscles:
A) contract when the ventricles relax
B)
Q24: Papillary muscles are attached to the cusps
Q26: Which of these statements concerning the functional
Q27: As a result of the long refractory
Q28: Action potentials in contractile cardiac muscle cells
A)
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