Compartmental organization of styloglossus and hyoglossus motoneurons in the hypoglossal nucleus of the rat.
Surgical techniques were used to isolate the extrinsic bellies of the styloglossus and hyoglossus muscles from the body of the tongue for cholera toxin HRP injection. An average of 53 styloglossus and 121 hyoglossus motoneurons in the dorsal subdivision of the hypoglossal nucleus were demonstrated using tetramethyl benzidine histochemistry. Styloglossus motoneurons were restricted to the rostral 25% of the nucleus while hyoglossus motoneurons occupied other regions of the dorsal nucleus.
Guo
Y
Y
Department of Anatomy, Virginia Commonwealth University, Richmond 23298-0709, USA.
Goldberg
S J
SJ
McClung
J R
JR
D000818:Animals; D002452:Cell Count; D006651:Histocytochemistry; D007002:Hypoglossal Nerve / Q000033:anatomy & histology*; D008297:Male; D009046:Motor Neurons / Q000648:ultrastructure*; D051381:Rats; D017207:Rats, Sprague-Dawley; D014059:Tongue / Q000033:anatomy & histology*