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Flashcards in 63 Deck (14)
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1
Q

Ventral view of MO

what do you see

A

sulcus lat ventr
fissura mediana
olive - vagus group leave

2
Q

VENTRAL

fissura mediana with crossing fibers

A

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

3
Q

VENTRAl

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

A

lat->med

  1. VIII vestibulocochlearis
  2. VII facial
  3. VI abducens
4
Q

DORSAL

connections of the rhomboid fossa

A

caud to the canalis centralis with the obex at opening

rostr ve have the aquaduct leading to the IIIrd ventricle
diencephalon

5
Q

DORSAL

what do we see at floor of rhomboid fossa

A

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

6
Q

DORSAL

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

A

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

7
Q

DORSAL

what is found laterally in the fossa rhomboidea

A

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

8
Q

DORSAL

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

A

the peduncles of each cerebellar hemispheres are found

pedunculi cerebellaris caud/rostr/medius

9
Q

LATERAL

what structures do we see dorsally

A

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

10
Q

LATERAL

the roof of the medulla oblongata

A

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

11
Q

the rhomboencephalon is composed of

hindbrain!

A
myelencephalon = MO
metencephalon = pons + cerebellum
12
Q

the 3 lobes of cerebellum

A

2 large hemispheres

  • outer gray matter, inner white matter
  • branched like a tree, called arbor vitae
  • 10 lobes per “tree”
13
Q

pons

A

pons and MO have grey matter inside and white outside

oval shape with sulcus basilaris for the basilar artery

14
Q

Medulla oblongata

A

hollow –> IVth ventricle

pons and MO have grey matter inside and white outside