<Li> Posterior fontanelle is triangle - shaped . It lies at the junction between the sagittal suture and lambdoid suture . At birth , the skull features a small posterior fontanelle with an open area covered by a tough membrane , where the two parietal bones adjoin the occipital bone ( at the lambda ) . The posterior fontanelles ossify within 2 or 3 months after birth . This is called intramembranous ossification . The mesenchymal connective tissue turns into bone tissue . </Li>
<Li> Posterior fontanelle is triangle - shaped . It lies at the junction between the sagittal suture and lambdoid suture . At birth , the skull features a small posterior fontanelle with an open area covered by a tough membrane , where the two parietal bones adjoin the occipital bone ( at the lambda ) . The posterior fontanelles ossify within 2 or 3 months after birth . This is called intramembranous ossification . The mesenchymal connective tissue turns into bone tissue . </Li>
when does a baby 's posterior fontanelle close
when does a baby 's posterior fontanelle close
2 or 3 months after birth
2 or 3 months after birth