Brainstem Anatomy

Question 1

what are the main functions of the brainstem?

Answer 1

breathing, BP, HB, swallowing, alertness, temp

Question 2

what is the dorsal area of the midbrain called?

Answer 2

tectum

Question 3

what lies on the tectum of the midbrain in the dorsal view?

Answer 3

superior and inferior calliculi

Question 4

what is superior colliculus involved in?

Answer 4

vision

Question 5

what is inferior colliculus involved in?

Answer 5

hearing

Question 6

the ventral surface of the midbrain is what structure?

Answer 6

cerebral peduncle

Question 7

what is the hole in the dorsal portion of the X section of the midbrain?

Answer 7

cerebral aqueduct

Question 8

which portion of the brainstem in X section looks like a bat?

Answer 8

pons

Question 9

which portion of the brainstem in cross section has cerebral aqueduct?

Answer 9

midbrain

Question 10

which portion of the brainstem in cross section has 4th ventricle in dorsal position?

Answer 10

pons and medulla

Question 11

what portion of the medulla does decussation of the DCML tract occur? caudal or rostral

Answer 11

caudal

Question 12

the decussation of the DCML occurs in the caudal medulla and switches from what structure into what other structure?

Answer 12

nucleus gracilis and cuneatous into the medial lemniscus

Question 13

where is the medial lemniscus in the medulla?

Answer 13

central portion

Question 14

where are the spinothalamic and hypothalmospinal tracts in the medulla?

Answer 14

lateral ventral edge

Question 15

where is the corticospinal tract in the medulla?

Answer 15

ventral portion in the pyramid

Question 16

what is on the ventral view of the medulla in the center?

Answer 16

pyramids

Question 17

just lateral to the pyramids of the medulla are the what?

Answer 17

olives of the medulla

Question 18

what three arteries feed the medulla?

Answer 18

posterior inferior cerebellar artery
vertebral artery
anterior spinal artery

Question 19

the posterior inferior cerebellar artery serves what portion of the medulla?

Answer 19

dorsolateral regions

Question 20

the vertebral artery serves what portion of the medulla?

Answer 20

olives

Question 21

the anterior spinal artery serves what portion of the medulla?

Answer 21

pyramids

Question 22

in the mid medulla, where does the tract of the DCML lie?

Answer 22

in the pyramids

Question 23

what is on the lateral side of the cross section of the pons?

Answer 23

middle cerebral peduncle

Question 24

what are the two arteries that feed the pons?

Answer 24

anterior inferior cerebellar artery

pontine artery

Question 25

does the pontine artery feed the lateral or medial portion of the pons?

Answer 25

medial

Question 26

does the anterior inferior cerebellar artery feed the lateral or medial portion of the pons?

Answer 26

lateral

Question 27

is the tract of the corticospinal tract more anterior or posterior to the other tracts in the pons?

Answer 27

anterior

Question 28

what tracts are the most posterior in the pons?

Answer 28

medial lemniscus of DCML and the STT/hyposthalamospinal

Question 29

what vessel feeds all the tracts in the pons?

Answer 29

pontine artery

Question 30

what vessel feeds the middle cerebral peduncle in the pons?

Answer 30

anterior inferior cerebellar artery

Question 31

what vessel feeds all of the midbrain?

Answer 31

posterior cerebral artery

Question 32

what portion of the midbrain does the corticospinal tract traverse?

Answer 32

the cerebral peduncle

Question 33

what portion of the midbrain does the DCML, STT and hypothalamospinal tracts traverse?

Answer 33

in the medial area