The action potential in a cardiac contractile cell causes
A) opening of L-type calcium channels.
B) opening of ryanodine receptor calcium channels.
C) activation of sodium-potassium ATPase.
D) activation of NCX transporters.
E) opening of HCN channels.
Correct Answer:
Verified
Q18: Capillaries are best described as
A) microscopic vessels
Q19: In the 16th century, William Harvey discovered
Q20: As blood vessel length increases,
A) resistance increases
Q21: The depolarization of the pacemaker action potential
Q22: Stretching a myocardial cell
A) only decreases the
Q24: The rapid depolarization phase of the action
Q25: The medical term for heart attack is
A)
Q26: Autorhythmic cells
A) are also called pacemakers because
Q27: The end of the plateau phase is
Q28: ECGs
A) provide direct information about the heart
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