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Question 1

Ventral view of MO

what do you see

Answer 1

sulcus lat ventr
fissura mediana
olive - vagus group leave

Question 2

VENTRAL

fissura mediana with crossing fibers

Answer 2

decussatio pyramidum, here we also see the tractus pyramidis btw the fissura and the sulcus

Question 3

VENTRAl

which 3 nerves do we see exiting the MO from the border btw pons and MO

Answer 3

lat->med

1. VIII vestibulocochlearis
2. VII facial
3. VI abducens

Question 4

DORSAL

connections of the rhomboid fossa

Answer 4

caud to the canalis centralis with the obex at opening

rostr ve have the aquaduct leading to the IIIrd ventricle
diencephalon

Question 5

DORSAL

what do we see at floor of rhomboid fossa

Answer 5

sulcus medianus and sulcus limitans on either side - caud these lead to fovea caudalis laterally, and rostr to fovea rostralis rostrally

Question 6

DORSAL

the two sulci rostr and caud after the end of the sulcus limitans we find

Answer 6

rostral
the tuberculum faciale dorsale is found(ventral too on ventral aspect)

caud
the trigonum n. hypoglossi and trigonum n. vagi - two each on either side of the sulcus medianus

Question 7

DORSAL

what is found laterally in the fossa rhomboidea

Answer 7

area vestibuli with a lateral recess, and the 4 (rostral, caudal, medial and lateral) nuclei of the vestibularis are found) VIII

Question 8

DORSAL

rostral, lateral to the border of the 4th ventricle/outside the rhomboid fossa

Answer 8

the peduncles of each cerebellar hemispheres are found

pedunculi cerebellaris caud/rostr/medius

Question 9

LATERAL

what structures do we see dorsally

Answer 9

caud to the colliculi we see velum medullare rostrale and then the caudal one along lat border of fossa

Question 10

LATERAL

the roof of the medulla oblongata

Answer 10

from the 4th ventricle we have 3 openings to the roof:
2apertura lat ventriculi quarti
1apertura mediana ventriculi quarti
they lead to the plexus on the roof: plexus choroideus ventriculi IV

Question 11

the rhomboencephalon is composed of

hindbrain!

Answer 11

myelencephalon = MO
metencephalon = pons + cerebellum

Question 12

the 3 lobes of cerebellum

Answer 12

2 large hemispheres

• outer gray matter, inner white matter
• branched like a tree, called arbor vitae
• 10 lobes per “tree”

Question 13

pons

Answer 13

pons and MO have grey matter inside and white outside

oval shape with sulcus basilaris for the basilar artery

Question 14

Medulla oblongata

Answer 14

hollow –> IVth ventricle

pons and MO have grey matter inside and white outside