SA node depolarization includes:
A) ion channels opening and allowing the slow inward movement of Na+ currents called "funny" currents
B) a resting membrane potential that begins at around -55 to -60 mV and becomes less negatively charged until it results in a gradual depolarization
C) the gradual depolarization of the SA node that occurs because of a slow inflow of Ca++ into the cell without a corresponding outflow of K+.
D) All of these
Correct Answer:
Verified
Q1: The term dysrhythmia means the:
A) rhythm arises
Q2: _ is the ability of the cardiac
Q3: Which of the following describes the generation
Q4: In the polarized state:
A) cells have a
Q6: Depolarization of nonpacemaker myocytes
A) occurs spontaneously.
B) takes
Q7: _ is/are the most common symptom of
Q8: If the patient has a fast heart
Q9: Cardiac output is defined as _.
A) blood
Q10: Match the following types of dysrhythmias with
Q11: Match the following types of dysrhythmias with
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