Changes

The neurocranium develops from the neural crest and mesoderm and undergoes  endochondral ossification. It lies ventral to the brain.

The neurocranium develops from the neural crest and mesoderm and undergoes  endochondral ossification. It lies ventral to the brain.

The dermatocranium lies dorsal to the brain and develops from the neural crest and mesoderm. It undergoes intramembranous ossification.

The dermatocranium lies dorsal to the brain and develops from the neural crest and mesoderm. It undergoes [[Bones and Cartilage - Anatomy & Physiology#Development of Bone and Cartilage|intramembranous ossification]].

The viscerocranium is the pharyngeal skeleton. It is derived only from the neural crest and undergoes endochondral and intramembranous ossification.

The viscerocranium is the pharyngeal skeleton. It is derived only from the neural crest and undergoes [[Bones and Cartilage - Anatomy & Physiology#Development of Bone and Cartilage|endochondral and intramembranous ossification]].

The various facial muscles attach onto the skull in different places depending on their function. Movement of the external apendages, [[Mastication|mastication]] and facial expressions all rely on the movement of the facial muscles.

The various facial muscles attach onto the skull in different places depending on their function. Movement of the external apendages, [[Mastication|mastication]] and facial expressions all rely on the movement of the facial muscles.