Fontanels Are

Question

Fontanels are
A) paranasal sinuses.
B) bone marrow structures that produce blood cells.
C) composed entirely of compact bone.
D) areas found in the infant skull that are not ossified.

Accepted Answer

Fontanels are areas found in the infant skull that are not fully ossified yet. They are made up of fibrous membranes between the bones that will eventually fuse together to form solid bone. These fontanels allow for some flexibility during birth and brain growth in infancy.