When does the posterior fontanelle close?
3 to 6 months.
6 to 9 months.
9 to 12 months.
2 to 3 months.
The Correct Answer is D
The correct answer is D. 2 to 3 months.
Choice A rationale:
The posterior fontanelle does not close within 3 to 6 months of birth. This timeframe is too long for the typical closure of the posterior fontanelle.
Choice B rationale:
Similarly, the posterior fontanelle does not close within 6 to 9 months of birth. This period is beyond the usual closure time for the posterior fontanelle.
Choice C rationale:
The posterior fontanelle does not close within 9 to 12 months of birth. This timeframe is significantly longer than the typical closure period for the posterior fontanelle.
Choice D rationale:
The posterior fontanelle typically closes within 2 to 3 months of birth. This is the correct timeframe for the closure of the posterior fontanelle.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale: Toddlers who can stay dry for about 2 hours demonstrate bladder capacity and control, indicating readiness for toilet training initiation and successful bladder training outcomes.
Choice B rationale: Three hours of dryness exceeds typical toddler bladder capacity; most children cannot consistently achieve this duration until later developmental stages, making it less reliable for readiness assessment.
Choice C rationale: Four hours of dryness is uncommon in toddlers; bladder control at this level usually develops in preschool years, not during early toilet training readiness evaluation.
Choice D rationale: Five hours of dryness is unrealistic for toddlers; such extended control reflects older child bladder maturity, not appropriate for determining readiness in early toilet training.
Correct Answer is B
Explanation
Choice A rationale: Artificialism refers to children believing natural events are created by humans or higher powers, not food preferences. It does not explain rejecting peas due to color.
Choice B rationale: Centering is focusing on one characteristic, such as color, while ignoring others. The child rejects peas solely because they are green, demonstrating this cognitive limitation.
Choice C rationale: Egocentrism is the inability to see another’s perspective. While common in preschoolers, it does not explain rejecting food based on a single attribute like color.
Choice D rationale: Animism is attributing life-like qualities to inanimate objects. Refusing peas because they are green does not involve assigning human traits, so animism is not applicable.
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