The nurse is assisting in a seminar for newly licensed nurses, teaching about characteristics of the heart. The nurse shows understanding of the heart when she states that the innermost layer of the heart is called the.
chambers.
pericardium.
epicardium.
endocardium.
The Correct Answer is D
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Temperature does not directly affect cardiac output, which is the volume of blood the heart pumps per minute.
Choice B rationale:
Heart rate is needed to calculate cardiac output as it is the number of heart beats per minute.
Choice C rationale:
Blood pressure is not used in the calculation of cardiac output.
Choice D rationale:
Respiratory rate does not directly influence cardiac output.
Correct Answer is B
Explanation
Choice A rationale:
B6 is readily available in a variety of foods, including fruits, vegetables, and grains, which are all part of a vegan diet.
Choice B rationale:
B12 is primarily found in animal products, so those on a vegan diet may need to take a supplement to avoid deficiency.
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