Medulla

Question 1

Difference of lower 1/3 of medulla to the spinal cord

Answer 1

Beginning of nucleus cuneatus
Descending nucleus and tract of CN5 trigeminal
Ventral horn starts to disappear

Question 2

Pain and temperature in the ipsilateral side of the face

Answer 2

Descending nucleus and tract of trigeminal CN5

Question 3

Considered as the somatic sensory center of the brain since all CN with general sensory function would synapse in it

Answer 3

Descending nucleus and tract of trigeminal CN 5

Question 4

Contralateral pain and temperature in the body

Answer 4

Lateral spinothalamic tract

Question 5

Axons from nucleus cuneatus & nucleus gracilis forms

Answer 5

Internal arcuate fibers

Question 6

Conscious proprioception from contralateral side of the body

Answer 6

Medial lemniscus

Question 7

Lesion on posterior column tracts would manifest

Answer 7

Ipsilateral loss of conscious proprioception, discriminative touch and vibration sense

Question 8

Lesion on medial lemniscus will manifest

Answer 8

Contralateral loss of conscious proprioception, discriminative touch and vibration sense

Question 9

Part of medulla where posterior column tract decussated

Answer 9

Middle 1/3 of the medulla

Question 10

Carries unconscious proprioceptive information above C8

Will form dorsal external arcuate fibers that would enter cerebellum via Inf ceb peduncle

Answer 10

Accessory cuneate nucleus

Question 11

Nucleus in the area of pyramid

Receives major input from contralateral cerebral cortex

Answer 11

Arcuate nucleus

Question 12

Part of descending nucleus of V responsible in pain and temperature on ipsilateral side of the face

Answer 12

Pars caudalis

Question 13

Part of descending nucleus of V that mediates dental pain

Answer 13

Pars interpolaris

Question 14

Part of descending nucleus of V that mediates tactile sensation from oral mucosa

Answer 14

Nucleus oralis

Question 15

Caudal peak of rhomboid fossa

Answer 15

Obex

Question 16

side of obex that lacks blood brain barrier making it sensitive to noxious agents
Chemosensitive emetic center

Answer 16

Area postrema

Question 17

Most prominent structure in the open medulla

Answer 17

Inferior olivary nuclear complex

Question 18

Alar plate derivatives
Sensory in function
(Lateral to sulcus limitans)

Answer 18

Spinal nucleus of trigeminal
Solitary nucleus
Lower border of vestibulococchlear

Question 19

Nuclei in Inferior Olivary nuclei complex

Answer 19

Principal olivary nucleus
Medial accessory nucleus
Posterior accessory nucleus

Question 20

Inferior olivary nuclear complex projects to cerebellum as

Answer 20

Olivocerebellar fibers

Biggest component of inferior cerebellar peduncle

Question 21

Medial lemniscusis well form at this part of medulla

Answer 21

Upper 1/3

Question 22

Responsible for conjugate gaze

If not functional = diplopia

Answer 22

Medial longitudinal fasciculus

Question 23

Join with juxtarestiform body to forming the Inferior Cerebellar Peduncle

Answer 23

Restiform body

Question 24

Motor fibers supplying the derivatives of the somites
Most medial
CN 3 4 6 12

Answer 24

GSE

Question 25

Motors supplying smooth muscles, cardiac muscles and glands

Answer 25

GVE

Question 26

Motor fibers supplying musclesderived from branchial arches

Answer 26

SVE

Question 27

fibers supplying surface of skin

Answer 27

GSA

Question 28

fibers supplying muscoa of the viscera, throat, resp tract, gi tract

Answer 28

GVA

Question 29

fibers supplying hearing and equilibrium

Answer 29

SSA

Question 30

fibers supplying taste

Answer 30

SVA

Question 31

Lesion in CN9 glossopharyngeal

Answer 31

Ipsilateral loss of taste and gag reflex

Question 32

Bilateral damage to this CN is fatal

Answer 32

CN10 Vagus nerve

Question 33

Unilateral lesion in CN 10 vagus nerve

Answer 33

Ipsilateral paralysis of soft palate, pharynx, larynx

Question 34

Lesion in CN11 spinal accessory nerve

Answer 34

Ipsilateral drooping and difficulty of turning head contralaterally

Question 35

Lesion to CN12 hypoglossal nerve

Answer 35

Tongue protrusion towards affected side

Question 36

Located in the middle 1/3 of solitary nucleus supplying diaphragm

Answer 36

Dorsal respiratory group

Question 37

Located in the nucleus ambiguus | Supplies intercostal and abdominal muscles

Answer 37

Ventral respiratory group

Question 38

Suppression of central pain transmission | Serotonergic

Answer 38

Raphe nuclei

Question 39

Nerve network that plays important role in controlling arousal or wakefulness

Answer 39

Reticular nuclei

Question 40

Vomiting center

Answer 40

Dosolateral MRF

Question 41

Sympathetic vasomotor center

Answer 41

Ventrolateral MRF

Question 42

Arterial supply of anterolateral portion of medulla

Answer 42

Medullary branch of vertebral artery

Question 43

Arterial supply of posterior portion of open medulla

Answer 43

Posterior inferior cerebellar artery

Question 44

Arterial supply of posterior portion of closed medulla

Answer 44

Posterior spinal artery

Question 45

Arterial supply of anteromedial portion of medulla

Answer 45

Anterior spinal artery

Question 46

Venous supply of medulla

Answer 46

Basilar venous plexuses Inferior petrosal sinus Occipital sinus