[Formation of cutaneous nerve trunks in the chick. Ultrastructural and quantitative analysis].
In chick skin structuration of nervous trunks takes place at 14-15 days of incubation, at the time of formation of the adult pattern of cutaneous innervation. At this same stage, myelogenesis begins, but develops mainly after hatching:  only 4% of axons are myelinated at hatching, 40% in 6-week old Chickens and 60% in adults. This "critical" stage (14-15 days of incubation) apparently corresponds to the stabilization of cutaneous nerve supply.
D000375:Aging; D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D009186:Myelin Sheath / Q000502:physiology; D010525:Peripheral Nerves / Q000502:physiology*; D012867:Skin / Q000254:growth & development / Q000294:innervation*
Formation des troncs nerveux cutanés chez le poulet. Analyse ultrastructurale et quantitative.