What ion is primarily responsible for the depolarization of the SA node of the heart?
A) Sodium
B) Potassium
C) Chloride
D) Calcium
Correct Answer:
Verified
Q29: During depolarization,
A) Sodium channels open, potassium channels
Q30: During final repolarization,
A) Sodium channels close, potassium
Q31: Absolute refractory period in cardiac muscle extends
Q32: What is the pacemaker of the heart?
A)
Q33: When the SA node depolarizes and the
Q35: When the SA node depolarizes, which of
Q36: What part of the conducting system of
Q37: Which of the following is the correct
Q38: Which one of the following conditions is
Q39: Which one of the following conditions is
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