My sister had a ultrasound. shes 22 weeks pregnant. in the pictures he has an indention down his skull. is the skull developing still at 22 weeks. ?

Yes, developing: The bones on the skull are not fused, thus alllows shifting during birthing process/easier for head to get throught the vaginal canal. So, the bones have higher density and appear brigher on us and thus u may be seeing gaps in between the bones. I am sure the doc will let her know if there are concerns. Otherwise, the bones of skull continue to change for years to come..Good luck..

Yes: Skull developes until bones fuse together.