PONS

Question 1

Where is the basilar artery located

Answer 1

pontine sulcus with protuberance

Question 2

dorsal portion of the pons

Answer 2

rostral floor of the ventricle

Question 3

nerve fiber bundles in the basis pontis

Answer 3

CST, CBT, CPCerebellar

Question 4

largest group of fibers in the basis pontis.

Answer 4

CPCerebellar

Question 5

somatotopic arrangement of corticopontocerebellar system

Answer 5

the prerolandic cortex: medial pontine nuclei,

the postrolandic cortex (primary somatosensory cortex): lateral pontine nuclei,

the arm area of the sensorimotor cortex to dorsal pontine nuclei,

and the leg area to ventral pontine nuclei

Question 6

T or F, The pontocerebellar projection is primarily crossed

Answer 6

T

Question 7

the pontocerebellar projection is somatotopically organized, with the caudal half of the pons projecting to the _____lobe of the cerebellum and the rostral half projecting to the ________ lobe.

Answer 7

anterior, posterior

Question 8

Contains the pontine protuberance

Answer 8

Basis pontis

Question 9

phylogenetically older part of the pons and is composed largely of the reticular formation

Answer 9

tegmentum

Question 10

basal part of the tegmentum lies the specific sensory lemniscal system, which includes the

Answer 10

medial lemniscus, trigeminal lemniscus, and spinotha-lamic tract.

Question 11

Intermingled with the ascending fibers of the lemniscal system are transversely oriented fibers of the ________

Answer 11

trapezoid body

Question 12

Dorsal to the medial lemniscus

Answer 12

CTT

Question 13

_______retain the same dorsal and paramedian positions they occupied in the medulla and pons just beneath the floor of the fourth ventricle

Answer 13

medial longitudinal fasciculus and the tectospinal tract

Question 14

ventral spinocerebellar tract enters the ________ to reach the cerebellum.

Answer 14

superior cerebellar peduncle

Question 15

Lesions involving the___________in the tegmentum and __________ are associated with the syndrome of anosognosia for hemiplegia in which the patients are unaware of their motor deficit

Answer 15

pontine reticular nuclei

corticospinal fibers in the basis pontis

Question 16

neuromelanin-containing catecholamine neurons and is a synaptic station for gustatory (taste) pathways. It is also believed to play an important role in autonomic regulation,

Answer 16

parabrachial nucleus

Question 17

division of parabrachial nucleus

Answer 17

lateral and medial segments

Question 18

Between the spinal lemniscus, brachium conjunctivum, and medial lemniscus

Answer 18

parabrachial pedunculopontine nucleus.

Question 19

The pedunculopontine nucleus’ function:

Answer 19

is the brain stem control center for somatic motor and cognitive behaviors, including locomotion, motor learning, and the reward system

Question 20

pedunculopontine nucleus hormones:

Answer 20

cholinergic and glutamatergic.

Question 21

Larger division of vestibule-cochlear

Answer 21

cochlear

Question 22

Second-order neurons from the cochlear nuclei course through ___________

Answer 22

the tegmentum of the pons

Question 23

Three acoustic striae

Answer 23

dorsal, ventral, and intermediate.

Question 24

largest striae

Answer 24

ventral

Question 25

Functions of the superior olivary complex include:

Answer 25

(1) processing of cochlear signals via the ascending auditory pathway, (2) detection of interaural sound intensity, and (3) providing feedback control of cochlear mechanism through the olivocochlear bundle.

Question 26

The auditory projection (auditory radiation) from the medial geniculate body to the primary auditory cortex traverses the : ___________

Answer 26

sublenticular portion of the internal capsule.