Pons

Question 1

metencephalon consists of

Answer 1

pons

cerebellum

Question 2

The motor and sensory nuclei and the exit points of __________________ are associated with the pons

Answer 2

CN 5-13

Question 3

is not part of the brainstem but rather is considered a suprasegmental structure because it is located superior to the brainstem

Answer 3

cerebellum

Question 4

The blood supply to the pons and cerebellum arises from branches of the

Answer 4

basilar and cerebellar arteries.

Question 5

The metencephalon extends from the ___ to _____

Answer 5

pontine flexure to mesencephalic isthmus

Question 6

The cranial nerve motor nuclei found in the pons _______________, originate from the basal plate and are located medial to the sulcus limitan

Answer 6

trigeminal
abducens
facial
superior salivatory

Question 7

The cranial nerve motor nuclei found in the pons (trigeminal, abducens, facial, and superior salivatory) originate from the _____ and are located ____ to the sulcus limitan

Answer 7

basal plate

medial

Question 8

somatic efferent in pons

Answer 8

trigeminal
facial
abducens

Question 9

visceral efferent of pons

Answer 9

superior salivatory

Question 10

These nuclei originate from the alar plate and are found lateral to the sulcus limitans

Answer 10

trigeminal
vestibulocochlear
solitary nucleus

Question 11

somatic afferent of pons

Answer 11

trigem

veitbular

Question 12

visceral afferent of pons

Answer 12

solitary nucleus

Question 13

The portion of the posterior pons that contains these motor and sensory nuclei as well as the reticular formation and several ascending and descending tracts is the

Answer 13

pontine tegmentum

Question 14

Immature alar plate neurons also migrate into this anterior pontine region to form th

Answer 14

basilar pontine nuclei

Question 15

pons consists of a massive bundle of transversely oriented fibers that enter the cerebellum as the

Answer 15

middle cerebellar peduncle (brachium pontis)

Question 16

marks the transition from the basilar pons to the middle cerebellar peduncle,

Answer 16

exit of trigeminal nerve

Question 17

large axonal bundles forming the ______ of the midbrain extend into the basilar pons

Answer 17

crus cerebri

Question 18

cranial nerves that emerge from the pons

Answer 18

trigeminal (V), abducens (VI), facial (VII), and vestibulocochlear (VIII).

Question 19

The trigeminal nerve exits laterally and is composed of

Answer 19

large sensory root (the portio major) and a small motor root (the portio minor)

Question 20

facial nerve, it is actually composed of two root

Answer 20

facial nerve (SE fibers) and the intermediate nerve (VA, VE, and SA fibers)

Question 21

forms the floor of the fourth ventricl

Answer 21

rhomboid foss

Question 22

visible only when the cerebellum is detached from the brainstem

Answer 22

pontine tegmentum

Question 23

formed by the underlying abducens nucleus and internal genu of the facial nerve,

Answer 23

facial colliculus

Question 24

marks the location of the vestibular nuclei.

Answer 24

vestibular are

Question 25

form the lateral walls of the fourth ventricle in the pons;

Answer 25

brachium pontis and the brachium conjunctivum

Question 26

major ascending tracts that continue to pons from medulla

Answer 26

medial lemniscus, anterolateral system, anterior trigeminothalamic fibers, and anterior spinocerebellar tract.

Question 27

The most prominent groups of descending fibers arise from cells located in the midbrain or forebrain and therefore traverse the pons These include the

Answer 27

corticospinal fibers, the central tegmental and rubrospinal tracts, and the tectobulbospinal system

Question 28

occupies a characteristic position near the midline in the floor of the fourth ventricle.

Answer 28

medial longitudinal fasciculus

Question 29

pons is divided into a poster (_______) and anterior (_________) regions

Answer 29

tegmentum

basilar