Medulla

Question 1

Rostral flared part of medulla

Answer 1

4th ventri

Question 2

Crnaial nerves associated with medulla

Answer 2

6-12

Question 3

Blod supply of medulla

Answer 3

From vertebrala rtery

Question 4

Medulla contains medullary reticular formation cell groups that influence

Answer 4

Heart rate

respiration

Question 5

Maturaing neurons of the basal plate in medulla give rise to

Answer 5

Hypogloss SE
Dorsal motor vagal nuceli VE
Inferior salivary nucleus VE
Nucleus ambiguus SE

Question 6

Cranial nerves derived from alar plate of medulla

Answer 6

Vestibular SA
Cochlear SA
solitary VA
spinal trigeminal SA

Question 7

Aalr plate neuroblast caudla to obex gives rise to

Answer 7

Gracile nucleus

Cuteata nucleus

Question 8

Alar palte cells caudal to obex gives rise to

Answer 8

Nuferior olivay nucleus

Question 9

Prominent bundle of axons collect in the anterior of he medulla to form

Answer 9

Pyramids

Question 10

Medulla is characterized externally by

Answer 10

Anterior median fissure
Lateral pyrimds
Olive (inf olivary eminence)

Question 11

Crossing of most fibers of the pyramids, arising from the motor cortex as corticospinal fibers, is called

Answer 11

Motor decussation

Question 12

The rootlet of gypogloss nerve exit exit the medulla via _____, a shallow grooce located between pyramid and olive

Answer 12

Preolivary sulcus

Question 13

Abducens emerges where

Answer 13

Pondmedullary joint

Question 14

Found between restiform body and the large eminence of the inferior olivary nucleus

Answer 14

Postolivary/retroolivary sulcus

Question 15

The retoro/postolovaty sulcus us found between

Answer 15

Restiform body and eminence of ifnerior olivary nucleus

Question 16

What emerge from the postolivary sulcus

Answer 16

Glossopha

Vagus

Question 17

Emerge from the posterolateral medulla at the pons medulla interface

Answer 17

Vestibulo

Facial

Question 18

General region of the exit of the facial and vestibulochoch is clincally regarded as the

Answer 18

Cerebellopontine angle

Question 19

Tumor of the vestibular portion if the eight cranial nerve and is a lesion licated ate the cerbeellopontine angle

Answer 19

Vestibular schwannoma

Question 20

Vestibular schwannoma lesion is found where

Answer 20

Cerebelloponting angle

Question 21

In the lateral surface, caudal to the obex, fibers of the spinal trigeminal nucleus and tract assume a superficial location and form the

Answer 21

Trigeminal tubercle (tuberculum cinereum)

Question 22

progressively enlarging body external to the trigeminal fibers rostral to the obex

Answer 22

restiform body

Question 23

posteior medulla caudal to obex is characterized by

Answer 23

gracile
cuneata
respective tubercles

Question 24

prominent elevation on the posterolateral aspect of the medulla

Answer 24

restiform body

Question 25

restiform body progressively becomes larger as it goes toward

Answer 25

ponsmedulla junction

Question 26

restiform body joins with what in the pons

Answer 26

juxtarestiform body

Question 27

exception in the blood supply from verebral arteries

Answer 27

choroid plexus that extends out of the uschka and adjacent cochlear nuclei

Question 28

blood supply of the are not supplied by vertebral arteries

Answer 28

anterior inferior cerebellary artery (from basilar)

Question 29

in general, medial medulla is served by (blood supply)

Answer 29

anterior spinal artery

Question 30

in general, anterolateral medulla is served by (blood supply)

Answer 30

vertbera; artery

Question 31

in general, posterolateral medulla is served by (blood supply)

Answer 31

posterior inferior cerbellar artery (PICA)

Question 32

lesion in anterior spinal artery causes somatosensory and motor deficit reflecting damage where

Answer 32

medial lemniscus hypogloss root corticospinal fibers in pyrmaids

Question 33

lesions in PICA will damage

Answer 33

anterolateral system | spinal trigeminal tract and nucleus

Question 34

tracs that convey pain and temperature inputts to more rostral levels

Answer 34

spinomesencephalic | spinothalamic fibers

Question 35

ascending tracts in the medulle are continuations of what from the spinal cord gray matter

Answer 35

anterlateral system | posterior and antrior spinocerebellar tracts

Question 36

ascending tracts in the medulla are cotinuation of what from the posterior root ganglion cells

Answer 36

gracile | cuneate fasciculi

Question 37

tactile and vibratory information carried by posterior column fibers continue rostrally via what

Answer 37

medial lemniscus

Question 38

spinocerebellar axons enter the cerebellum through _____ (posterior) or ___(anterior)

Answer 38

restiform | superior cerebellar peduncle

Question 39

The descending tracts that originate from the cerebral cortex are what

Answer 39

corticospinal

Question 40

The descending tracts that originate from themidbrain are what

Answer 40

reticulospinal | vestibulospinal

Question 41

The spinal cord–medulla transition is characterized by changes that begin at the caudal level of the

Answer 41

motor decussation

Question 42

at the level of the motor decussation (pyramidal decussation), about 90% of corticospinal fibers cross the anterior midline to form the contralateral

Answer 42

lateral corticospinal tract

Question 43

Internal to the spinal trigeminal tract

Answer 43

spinal trigeminal nucleus | pars caudalis

Question 44

laterally, the spinal trigeminal tract is visible on the surface of the medulla as the

Answer 44

trigeminal tubercle | tuberculum cinereum

Question 45

anterior medulla contains the most rostral part of the

Answer 45

``` accessory nucleus (cranial nerve XI) remnants of the medial motor cell column of C1 medial longitudinal fasciculus and tectobulbospinal syste ```

Question 46

accessory nucleus (cranial nerve XI), remnants of the medial motor cell column of C1, and the medial longitudinal fasciculus and tectobulbospinal syste

Answer 46

hypoglossal (XII) and dorsal motor vagal (X) nuclei

Question 47

it is the point at which a major ascending sensory pathway (posterior

Answer 47

sensory decussation