BRAINSTEM
Medulla oblongata
Pons
Mesencephalon
Medulla spinalis




Ncl. gracilis
Ncl. cuneatus
Ncll. vestibulares
Ncl. m. n. VI.
Ncl. coliculi inferioris




Ncl. coliculi inferioris
Ncl. coliculi superioris


BRAINSTEM – appearance of cranial nerves



C
R
Medulla oblongata (oblongata) – representative sections

SS
VS
VM
BM
SM
Kopie fig2Uprav
Plné kosočtverce Plné kosočtverce Plné kosočtverce Vodorovné cihly
Obrysy kosočtverců
Vlna 10%
ncl. et tr. solitarius
ncl. parasymp. n. X
ncl. originis n. XII
ncl. originis n. XI
tr. spino-c.ant.
tr. spino-c.post.
tr.cortico-
spinalis lat.
tr.ret.-spinalis
tr.rubro-
spinalis
tr.spino-th.
tr.vest.-spinalis
FLM
tr.tecto-spinalis
FR

Kopie fig3Uprav
Obrysy kosočtverců
S
SS
VS
VM
BM
SM
10% Vodorovné cihly
Vlna
FLM
fld
tr.tecto-spinalis
LM
ncl. originis n. XII
ncl.p.n.X
ncl.o. n. X et XI
ncl.+tr.sol.
ncll.vest.
ncl.cun.lat.
tr.cuneo-cer.
tr.vest.-spinalis
tr.rubro-
spinalis

f15-22a_cerebellum_mids_c
Pons


C
R
Pons – representative sections

S
SS
VS
VM
BM
SM
fig4Uprav
tr. tecto-spinalis
FLM
fld
FR
LM
LL
V
C
ncl.+tr.spinalis n.V.
tr. ponto-cerebellaris
n. VII.
n. VI.
ttc
tr. rubro-spinalis
tr. cortico-spinalis
tr. spino-cereb. ant.
ncl. solitarius
ncl. o. n. VII
ncl. p. n. VII
ncl. o. n. VI

fig5Uprav
SS
BM
ncl.tr.mes.n.V.
ncl. principalis n.V.
ttc
tr. tecto-spinalis
FLM
fld
FR
tr. rubro-spinalis
LM
LL
tr.cortico-bulbaris
pedunculus med.
tr. cortico-spinalis
pedunculus sup.
ncl. motor. n.V.
tr. spino-cereb. ant.

The central tegmental tract is a structure in the midbrain and pons.
The central tegmental tract includes ascending axonal fibers that arise from the rostral nucleus
solitarius and terminate in the ventral posteromedial nucleus (VPM) of thalamus. Information from
the thalamus will go to cortical taste area, namely the insula and frontal operculum.
It also contains descending axonal fibers from the parvocellular red nucleus. The descending axons
will project to the inferior olivary nucleus. This latter pathway (the rubro-olivary tract) will be
used to connect the contralateral cerebellum.
Lesion of the tract can cause palatal myoclonus, e.g. in myoclonic syndrome, itself a symptom of
medial superior pontine syndrome: a form of stroke affecting the paramedian branches of the upper
basilar artery.
Palatal myoclonus

f15-22a_cerebellum_mids_c
Mesencephalon


C
R
Mesencephalon – representative sections

Kopie fig6Uprav
S
SS
SM
ncl. mes. n.V.
ncl. colliculi inf.
ncl. orig. n. IV.
ncl. interpeduncularis
PAG
aqued. cerebri
FLM
fld
LL
decussatio ped. cereb.sup.
tr.tecto-spinalis
tr. rubro-spinalis
LM
FR
tr. o.,p.,t.pontinus
tr.c.-nucl.
tr.c.-nucl.
tr.c.-spin.
tr. f.pontinus
n.IV.

Kopie fig7Uprav
S
VM
BM
SM
aqued. cerebri
ncl. colliculi sup.
tr.tecto-spinalis
tr. rubro-spinalis
ncl. orig. n. III.
n. III.
fld
ncl. E.W.
LM
LM
FR
PAG
LL