The Human Brain During the Third Trimester

Mi

ddle

cer

ebel

lar^

ped

unc

le

Mi

ddle

cer

ebel

lar^

ped

unc

le

Inferior cer

ebellar peduncl

e

Inferior cer

ebellar peduncl

e

In

fer

ior

cer

eb

ella

r^ p

edu

ncl

e

In

fer

ior

cer

eb

ella

r^ p

edu

ncl

e

Transpontine

corticofugal tract

Pontocerebellar fibers

PParaflocculuaraflocculuss

Dentate nucleuDentate nucleuss

Medial longitudinal fasc.Medial longitudinal fasc.

Spinotectal tractSpinotectal tract

Dorsal longitudinal

fasciculus

Dorsal longitudinal

fasciculus

Pyramis

VIII

Pyramis

VIII

Nodulus

X

Nodulus

X

Uvul

a

IX

Uvul

a

IX

Anterior lobe

HI-HV

Anterior lobe

HI-HV

Simplex

lobule

HVI

Simplex

lobu le

HVI

VI nerVI nerve?ve?

Motor nucleus (VMotor nucleus (V))

V (^) n
erv
e?
V (^) n
erv
e?
Reticular
formation
Reticular
formatio n
Primary fissu re
Primary fissure
Ve
st
ib
ul
ar
nu
cl
ea
r
co
m
pl
ex
Ve
st
ib
ul
ar
nu
cl
ea
r
co
m
pl
ex

V

es

tib

u

la

r

n

u

cle

a

r

co

m

p

le

x

V

es

tib

u

la

r

n

u

cle

a

r

co

m

p

le

x

Spinocephalic tract?Spinocephalic tract?

Floccular peduncleFloccular peduncle

Raphe nuclear compleRaphe nuclear complexx

nucleus of the ponsnucleus of the ponsReticular tegmentalReticular tegmental

VVe ntral nucleus of the lateral lemniscus?entral nucleus of the lateral lemniscus?

VVe ntral nucleus of the lateral lemniscus?entral nucleus of the lateral lemniscus?

Spinal^

trigemin

al^ tract

Spinal^

trigemin

al^ tract

Lateral lemniscuLateral lemniscuss

Dorsal cochlear nucleuDorsal cochlear nucleuss

Superior olSuperior olivary compleivary complexx

TTr apezoid bodyrapezoid body

F

ourth

v

entricleF

ourth

ventricl

e

Ce rCere bellar deep nucleuebellar deep nucleuss

Lateral lemniscuLateral lemniscuss

Medial lemniscuMedial lemniscuss

Spinal^ nuc.

(V)

Spinal^ nuc.

(V)

Super

ior ce

rebell

peduncle ar

?

Super

ior ce

rebell

peduncle ar

?

(VII)(VII)GenuGenu

Mi

dd

lec

erebellarpeduncl

e

Mi

dd

lec

erebellarpeduncl

e

P O N SP O N S

VERMISVERMIS

HEMISPHEREHEMISPHERE

CEREBELLUM

FFourth ourth ventricle (lateral rventricle (lateral recess)ecess)

Cho

roid

plexu

s

Chor

oid

plexu

s

External germinal layer

External germinal layer

Germinal and transitional structures in italics

Germinal trigoneGerminal trigone

Ansiform lobule

(Crus I HVIIA)

Ansiform lobu le

(Crus I HVIIA)

Ansiform lobule

(Crus II HVIIA)

Ansiform lobule

(Crus II HVIIA)

Abducens

nucleus (VI)

Abducens

nucleus (VI)

Principal sensory

nucleus (V)

Principal sensory

nucleus (V)

PPontine grayontine gray

PPontine glioepithelium/ependymaontine glioepithelium/ependyma

PLATE 92B

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