Which of the following is true about the posterior fontanelle? A) It influences the fetal presentation only. B) It is square in shape and measures 2x2 cm. C) It becomes ossified at... Which of the following is true about the posterior fontanelle? A) It influences the fetal presentation only. B) It is square in shape and measures 2x2 cm. C) It becomes ossified at birth. D) It is formed by the union of three suture lines.
Understand the Problem
The question is asking for information regarding the characteristics of the posterior fontanelle, specifically which statement about it is true. This requires knowledge of human anatomy related to the fontanelles.
Answer
The posterior fontanelle is formed by the union of three suture lines.
The correct statement is that the posterior fontanelle is formed by the union of three suture lines.
Answer for screen readers
The correct statement is that the posterior fontanelle is formed by the union of three suture lines.
More Information
The posterior fontanelle is small and triangular, located at the junction of the lambdoid and sagittal sutures. It usually closes earlier than the anterior fontanelle, typically between 1 to 2 months after birth.
Tips
A common mistake is to confuse the closing times and conditions of different fontanelles due to the variability in individual development.
Sources
- Cranial sutures Information | Mount Sinai - New York - mountsinai.org
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