Question

. The nurse is teaching a mother regarding the baby's sutures and fontanelles. Please put an "X" on the fontanelle that will close at 6 to 8 weeks of age.

a) Anterior fontanelle
b) Posterior fontanelle
c) Mastoid fontanelle
d) Sphenoid fontanelle

Answer 1

The posterior fontanelle closes at 6 to 8 weeks of age, so the 'X' should be marked on option b) Posterior fontanelle.

Step-by-step explanation:

The correct answer to which fontanelle will close at 6 to 8 weeks of age is the posterior fontanelle. The fontanelles are the soft spots on an infant's head where the skull bones have not yet fully ossified. These areas allow for the skull to change shape during birth and for rapid brain growth after birth. The diamond-shaped anterior fontanelle located at the top front of the skull closes later, by nine to 18 months after birth. Therefore, the 'X' should be marked on option b) Posterior fontanelle.