Changes

==Introduction==

==Introduction==

Dorsal - ventral patterning is important for the proper development of both internal and external structures; particularly muscles and bones internally and hair, nails and footpads externally. This form of patterning requires control over the ectoderm and mesoderm, although it is the ectoderm which controls dorsal - ventral patterning. It achieves this by coordination of its own patterning with the underlying mesoderm, i.e. the dorsal ectoderm gives rise to dorsal mesoderm. Dorsal - ventral patterning controls the positioning of the AER as it exists at the boundary of the dorsal and ventral aspects.

Dorsal - ventral patterning is important for the proper development of both internal and external structures; particularly muscles and bones internally and hair, nails and footpads externally. This form of patterning requires control over the ectoderm and mesoderm, although it is the ectoderm which controls dorsal - ventral patterning. It achieves this by coordination of its own patterning with the underlying mesoderm, i.e. the dorsal ectoderm gives rise to dorsal mesoderm. Dorsal - ventral patterning controls the positioning of the AER as it exists at the boundary of the dorsal and ventral aspects.

[[Category:Developmental Biology]][[Category:Musculoskeletal System - Anatomy & Physiology]]

[[Category:Developmental Biology]][[Category:Musculoskeletal System - Anatomy & Physiology]]

[[Category:A&P Done]]

[[Category:A&P Done]]