4 or more
4 or more
Fontanels
they allow the skull to compress slightly during birth.
The fontanels allow the fetal skull to be compressed slightly during birth and also allow for brain growth during late fetal life.
The fontanels allow the fetal skull to be compressed slightly during birth and also allow for brain growth during late fetal life.
it is weaker
Cartilage
A fetal skull has six fontanels: two anterior (sagittal and frontal) and four posterior (two squamous and two mastoid). These membranous gaps eventually close as the skull bones fuse together during infancy.
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Anterior (frontal) Fontanel Posterior (occipital) Fontanel Anterolateral (sphenoid) Fontanel Posterolateral (mastoid) Fontanel
No. It is hyaline cartilage
Two characteristics of the fetal skeleton skull that differ from the adult skeleton are the presence of fontanelles (soft spots) in the fetal skull that allow for flexibility during childbirth, and the incomplete fusion of cranial bones in the fetus compared to the fully fused bones in adults.