[Efferent innervation of the cervical region of the trachea during the early postnatal ontogenesis].
Method based on retrograde axonal transport of horseradish peroxidase was used to study the efferent innervation of the cervical trachea in neonatal, 10-, 20-, 30-day-old and two-month-old kittens. In all the animals, labeled neurons were localized in the cranial cervical, middle cervical and cervicothoracic (stellate) sympathetic ganglia both on the right and on the left sides. Neurons were also localized at the level of medulla oblongata, in the dorsal and ambiguus nuclei of the vagus nerve. Labeled neurons were also found in the ventral horns of C(I-)C(V) spinal segments in the animals before 30 days of life. The number of sympathetic neurons, innervating the trachea, cells increased from the moment of birth, reaching a maximum by the age of 10 and 20 days and then declined up to the second month of life. The total number of parasympathetic neurons decreased gradually in the early development.
Emanuĭlov
A I
AI
Shilkin
V V
VV
Masliukov
P M
PM
D000818:Animals; D000831:Animals, Newborn; D001370:Axonal Transport / Q000502:physiology; D002415:Cats; D004525:Efferent Pathways / Q000502:physiology*; D009024:Morphogenesis / Q000502:physiology*; D009333:Neck / Q000254:growth & development / Q000294:innervation*; D009476:Neurons, Efferent / Q000502:physiology; D014132:Trachea / Q000254:growth & development / Q000294:innervation*