What part of the ECG would you look for atrial depolarization?
Pwave.
Twave.
QRS complex.
ST Segment.
The Correct Answer is A
Choice A rationale:
The P wave on an ECG represents atrial depolarization, which is when the atria contract.
Choice B rationale:
The T wave represents ventricular repolarization, which is when the ventricles relax.
Choice C rationale:
The QRS complex represents ventricular depolarization, which is when the ventricles contract.
Choice D rationale:
The ST segment represents the period when the ventricles are depolarized.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
The right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery. This is the only artery in the body that carries deoxygenated blood.
Choice B rationale:
The left atrium receives oxygenated blood from the lungs via the pulmonary veins, not the right ventricle.
Choice C rationale:
Pulmonary veins carry oxygenated blood from the lungs to the left atrium, not from the right ventricle to the lungs.
Choice D rationale:
The left ventricle pumps oxygenated blood to the rest of the body through the aorta, not to the lungs.
Correct Answer is D
Explanation
Choice A rationale:
Chambers refer to the four compartments of the heart, not a layer of the heart.
Choice B rationale:
Pericardium is the sac that surrounds the heart, not a layer of the heart itself.
Choice C rationale:
Epicardium is the outermost layer of the heart, not the innermost.
Choice D rationale:
Endocardium is indeed the innermost layer of the heart, lining the inner surfaces of the heart chambers and valves.
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