brainstem - internal anatomy of pons

Question 1

shallow midline groove for
the basilar artery

Answer 1

basilar groove

Question 2

rostral boundary of anterior pons

Answer 2

cerebral peduncles
superior pontine sulcus

Question 3

lateral boundary of anterior pons

Answer 3

middle cerebellar peduncles

Question 4

caudal boundary of anterior pons

Answer 4

inferior pontine sulcus

Question 5

Emerge on anterolateral surface of anterior pons

Answer 5

trigeminal nerve

Question 6

discuss roots of trigeminal nerve

Answer 6

smaller medial motor root

larger lateral sensory root

Question 7

emerges between pons and medulla; pontomedullary junction

Answer 7

abducens nerve

Question 8

emrgers at the cerebellopontine angle or the angle between caudal pons, rostral medulla and cerebellum

Answer 8

Facial nerve and Vestibulocochlear

Question 9

the posterior surface of pons is limited lat by _____

Answer 9

superior cerebellar
peduncles

Question 10

what divides the posterior surface of pons

Answer 10

medial sulcus or fissure of
SC and the medulla

Question 11

elongated elevation at post pons lateral to the median sulcus; bounded laterally by the sulcus limitans

Answer 11

Medial eminence

Question 12

Produced by root of facial nerve winding around the abducens nucleus; expanded inferior end of the medial eminence

Answer 12

Facial colliculus

Question 13

found Floor of superior part of sulcus limitans

Answer 13

Substanstia ferruginea

Question 14

Substanstia ferruginea is respo for what

Answer 14

attention, wakefulness and mood - norepi

Question 15

Substanstia ferruginea is aka as

Answer 15

locus ceruleus

Question 16

Produced by underlying vestibular nuclei and is lateral to sulcus limitans

Answer 16

Area vestibuli (vestibular area)

Question 17

2 levels of internal pons

Answer 17

Transverse section through the caudal part passing through the facial colliculus

Transverse section through trigeminal nuclei

Question 18

what can be found at Transverse Section Through Caudal Part

Answer 18

medial lemn

facial nuc

Question 19

the medial lemn is accompanied by _____

Answer 19

spinal and lateral lemnisci

Question 20

medial lemn will higa then is accompanied by _____

Answer 20

spinal and lateral lemnisci or spinothalamic and auditory respectively

Question 21

Lies posterior to the lateral part of the medial lemniscus

Answer 21

Facial Nucleus

Question 22

Fibers of facial nerve wind around the abducens nucleus producing the ______

Answer 22

facial colliculus

Question 23

found at the Transverse Section Through Caudal Part

Answer 23

MLF

medial vestib nuc

spinal nuc of trigeminal nerve and its tract

trapezoid body

basis

Question 24

purpose of MLF

Answer 24

Main pathway connecting vestibulocochlear nuclei with nuclei controlling EOMs (oculomotor, trochlear, abducens)

conjugate eye movement

Question 25

Superior part of lateral and the inferior part of the superior vestibular nucleus

Answer 25

Medial Vestibular Nucleus

Question 26

Anteromedial aspect of inferior cerebellar peduncle

Answer 26

Spinal Nucleus of Trigeminal Nerve and its tract

Question 27

Fibers derived from cochlear nuclei and nuclei of trapezoid body

Answer 27

Trapezoid Body

Question 28

significance of trapezoid body

Answer 28

Crossing auditory fibers

Question 29

what does basis contain

Answer 29

pontine nuclei

Question 30

_____ terminate in pontine nuclei

Answer 30

corticopontine fibers of crus cerebri

Question 31

found at the Transverse Section Through the Cranial Part

Answer 31

Motor Nucleus of Trigeminal Nerve Principal Sensory Nucleus of Trigeminal Nerve Superior Cerebellar Peduncle Trapezoid Body Medial Lemniscus Spinal lemniscus Lateral Lemniscus Middle Cerebellar Peduncle (brachium pontis)

Question 32

Motor fibers of trigeminal nerve travel _____ and exit on _____

Answer 32

anteriorly and anterior surface

Question 33

On lateral side of motor nucleus of trigeminal

Answer 33

Principal Sensory Nucleus of Trigeminal Nerve

Question 33

Principal Sensory Nucleus of Trigeminal Nerve continous inferiorly ______

Answer 33

with the nucleus of spinal tract

Question 34

Posterolateral to the motor nucleus of the trigeminal nerve

Answer 34

Superior Cerebellar Peduncle

Question 35

Superior Cerebellar Peduncle joint by ________

Answer 35

anterior spinocerebellar tract

Question 36

Lateral to medial lemniscus

Answer 36

Lateral Lemniscus

Question 37

what is lateral lemn

Answer 37

ascending auditory tract from cochlear nuclei to inferior colliculus

Question 38

largest cerebellar peduncle

Answer 38

middle

Question 39

what does the brachium pontis carry (MCP)

Answer 39

pontocerebellar tracts corticopontine and towards cerebellum contricopontomedullar