Topography of the facial musculature within the facial (VII) motor nucleus of the neonatal rat.
WGA-HRP, HRP and fluorescent tracers were used to determine the representation of the facial muscles in the facial motor nuclear complex (FMNC) of the newborn rat. Tracer injections of the superficial cervical and anterior mandibular portions of platysma, the orbicularis oculi muscle, the nasolabial musculature and the posterior auricular musculature revealed an adult-like topographic organization across FMNC subnuclei. Tracer delivery to individual vibrissa follicle loci of the whiskerpad also demonstrated an adult-like musculotopic organization within the lateral subnucleus.
Klein
B G
BG
Department of Biomedical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, VA 24061.
Rhoades
R W
RW
Jacquin
M F
MF
D000818:Animals; D000831:Animals, Newborn / Q000502:physiology*; D005152:Facial Muscles / Q000033:anatomy & histology* / Q000294:innervation; D005456:Fluorescent Dyes; D006735:Horseradish Peroxidase; D009046:Motor Neurons / Q000502:physiology*; D009334:Neck Muscles / Q000033:anatomy & histology / Q000294:innervation; D051381:Rats; D011919:Rats, Inbred Strains; D014909:Wheat Germ Agglutinins
D005456:Fluorescent Dyes; D014909:Wheat Germ Agglutinins; D006735:Horseradish Peroxidase