Which valves of the heart create the S2 heart sound?
Tricuspid and Aortic
Mitral and Tricuspid
Aortic and Pulmonic
Pulmonic and Mitral
The Correct Answer is C
Choice A reason: The S2 sound is produced by the closure of aortic and pulmonic valves, not tricuspid and aortic. Tricuspid closure contributes to S1, so this is incorrect for the S2 heart sound.
Choice B reason: Mitral and tricuspid valve closure produce the S1 sound, not S2. Aortic and pulmonic valves close during diastole, creating S2, so this incorrect for the second heart sound.
Choice C reason: The S2 sound results from the closure of the aortic and pulmonic valves at the end of systole, marking diastole’s start. This is the standard mechanism, making it the correct choice for S2.
Choice D reason: Pulmonic and mitral valves don’t close simultaneously; mitral closes for S1, pulmonic for S2. Aortic and pulmonic valves form S2, so this is incorrect for the heart sound.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: A nodule is a solid, elevated lesion, typically greater than 1 cm in diameter, often extending deeper into the dermis or subcutaneous tissue. The lesion described is less than 1 cm, making nodule an incorrect term for this superficial, smaller skin finding.
Choice B reason: A wheal is a transient, elevated lesion caused by dermal edema, often associated with allergic reactions or urticaria. It is not solid and typically lacks the circumscribed nature of the described lesion, making wheal an inappropriate documentation term.
Choice C reason: A papule is a solid, elevated, circumscribed lesion less than 1 cm in diameter, often due to localized skin changes like inflammation or benign growths. This matches the described lesion’s characteristics, making papule the correct term for documentation.
Choice D reason: A pustule is an elevated lesion containing pus, often associated with infections like acne. The described lesion is solid, not fluid-filled, so pustule does not fit the clinical presentation, making it an incorrect choice.
Correct Answer is D
Explanation
Choice A reason: Diet and weight provide partial insight into health but are incomplete. Diet is subjective and hard to quantify, and weight alone does not account for growth patterns or proportionality, making it less comprehensive than height and weight.
Choice B reason: Temperature and pulse reflect acute physiological status, not overall health. These vital signs can be normal despite chronic conditions or growth issues, making them inadequate as a primary index for a child’s general health status.
Choice C reason: Height and strength are not typically paired as a standard health index. Strength is subjective and difficult to measure consistently in children, while height alone misses weight-related nutritional status, making this less effective.
Choice D reason: Height and weight are key indicators of a child’s general health, reflecting growth, nutritional status, and development. These measurements, plotted on growth charts, allow comparison to age-specific norms, making them the best index for assessing overall health.
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