A) The atria are separated by an inter-atrial septum and the ventricles are separated by inter-venticular septum
B) A bicuspid (mitral) valve guards the opening between left atrium and left ventricle
C) P-wave represents the excitation (depolarization) of atria which causes atrial systole
D) Cardiac arrest is the condition in which heart is not pumping blood enough to meet the needs of the body
Correct Answer: D
Solution :
[d] Cardiac arrest is the condition in which heart is not pumping blood enough to meet the needs of the body. Heart failure is the condition in which heart is not pumping blood enough to meet needs of the body. Congestion of the lungs is the main symptom. Heart failure is not same as cardiac arrest (heart stops beating) or a heart attack (sudden damage of heart muscle due to inadequate blood supply).
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