Which of the following ions has a direct effect on the strength of cardiac contraction?
A) Sodium
B) Potassium
C) Magnesium
D) Calcium
Correct Answer:
Verified
Q2: The cardiac cell at rest has what
Q3: The P wave represents
A)Atrial depolarization.
B)Atrial repolarization.
C)Ventricular depolarization.
D)Ventricular
Q6: The normal ST segment is
A)At the isoelectric
Q6: The ST segment is located between the
A)P
Q7: Depolarization is a(n)
A)Electrical event that should result
Q9: The PR segment is located between the
A)P
Q9: The T wave represents
A)Atrial depolarization.
B)Atrial repolarization.
C)Ventricular depolarization.
D)Ventricular
Q10: For purposes of determining the presence of
Q12: In the action potential,phase 0 is
A)Depolarization.
B)Plateau.
C)Rapid repolarization.
D)Rest.
Q20: Which of the following correctly describes the
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