Distribution of trigeminospinal neurons. A retrograde HRP study in the macaque monkey and the cat

$172 DISTRIBUTION OF TRIGEMINOSPINAL MACAQUE MONKEY AND THE CAT.

NEURONS.

OSAMU TAKAHASHI, TAKAHIRO SATODA*, Department of Oral Anatomy, School Kasumi I-2-3, Minami-ku, Hiroshima The distribution monkeys were

anesthetized

of trigeminospinal

with

intraperitoneal

and then injected with

thoracic

or lumbar cord

distributed nucleus,

mainly

the caudal

spinal

trigemina]

nucleus,

part of the caudal A considerable

trigeminal

trigeminal

nucleus,

different

The animals

(35 mg/kg

trigeminospinal

nucleus

body

trigeminal

and the dorsomedial

nucleus.

cell bodies

the supratrigeminal of trigeminospinal

from that in the cat.

zone of

in the mesencephalic

nucleus

trigeminal

neuronal

neurons were

spinal

and the marginal

and additionally

spinal

including

The pattern of distribution

was not particularly

in 17 macaque

(HRP) method.

of the oral

trigeminal

of HRP-labeled

region,

was examined

sodium pentobarbital

HRP-labeled

part of the oral

number

neurons

peroxidase

one thirds

the main sensory

the juxtatrigeminal region.

segment. spinal

IN THE

0.2-2.0 ~i of 30% HRP into the cervical,

in the rostral

the interpolar

HRP STUDY

RYOTARO MATSUSHIMA AND NOBORU MIZUNO of Dentistry, Hiroshima University, 734, Japan

and 12 cats by the horseradish

weight),

A RETROGRADE

were

also seen in

and intertrigeminal

neurons

in the monkey