Changes

#A fissure develops in the middle of the sclerotome, dividing each somite into an anterior and posterior portion.

#A fissure develops in the middle of the sclerotome, dividing each somite into an anterior and posterior portion.

#The anterior portion of one somite unites with the posterior portion of the adjacent somite - '''resegmentation'''.

#The anterior portion of one somite unites with the posterior portion of the adjacent somite - '''resegmentation'''.

#*But; because only the sclerotome resegments, the muscle derived from the myotome remains to unite the original anterior and posterior pairs together.

#*But; because only the sclerotome resegments, the [[Muscles - Anatomy & Physiology|muscle]] derived from the myotome remains to unite the original anterior and posterior pairs together.

#The sclerotome surrounds the neural tube and differentiates firstly to cartilage and secondly bone. It forms the vertebrae.

#The sclerotome surrounds the neural tube and differentiates firstly to [[Bones and Cartilage - Anatomy & Physiology#Structure and Function of Cartilage|cartilage]] and secondly [[Bones and Cartilage#Types of Bone|bone]]. It forms the vertebrae.

<big><center>[[Developmental Biology - Anatomy & Physiology|'''BACK TO DEVELOPMENTAL BIOLOGY]]</center></big>

<big><center>[[Developmental Biology - Anatomy & Physiology|'''BACK TO DEVELOPMENTAL BIOLOGY]]</center></big>