fontanelle
fontanelle A soft place in the scalp over a gap between four bones of the skull (the frontal and parietal bones on each side) which is normally present in the newborn infant. It gradually closes during the first 12–18 months of life, as bone formation extends until the edges come together at the sutures. The fontanelle reveals changes in pressure inside the skull: it tends to bulge when the baby cries, and to become sunken in a state of dehydration. The pulsations of the underlying brain with the heart beat can be felt at this site through the scalp.
See skull.
Stuart Judge
See skull.
fontanelle
fontanelle
fontanelle (fon-tă-nel) n. an opening in the skull of a fetus or young infant due to incomplete ossification of the cranial bones and the resulting incomplete closure of the sutures. anterior f. the opening at the junction of the coronal, frontal, and sagittal sutures. posterior f. the opening at the junction of the sagittal and lambdoidal sutures.
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