internal structure of the brainstem

Question 1

differences between the sections through the midbrain

Answer 1

• upper midbrain: red nucleus and the oculomotor nerve are present
• lower midbrain: decussation of the superior cerebellar peduncles are present

Question 2

red nucleus

Answer 2

Question 3

oculomotor nerve

Answer 3

Question 4

decussation of the superior cerebellar peduncles

Answer 4

Question 5

where is the olive located

Answer 5

the upper part of the medulla

Question 6

upper midbrain features

Answer 6

• superior colliculi
• red nucleus
• cerebral aqueduct
• periaqueductal grey matter
• medial lemniscus
• spinal lemniscus
• substantia nigra
• cerebral peduncles

Question 7

upper midbrain - medial lemniscus pathway

Answer 7

Question 8

upper midbrain - spinal lemniscus pathway

Answer 8

Question 9

upper midbrain - superior colliculi

Answer 9

Question 10

upper midbrain - red nucleus

Answer 10

Question 11

upper midbrain - cerebral aqueduct

Answer 11

Question 12

upper midbrain - periaqueductal grey matter

Answer 12

Question 13

upper midbrain - substantial nigra

Answer 13

Question 14

upper midbrain - cerebral peduncles

Answer 14

Question 15

lower midbrain features

Answer 15

• inferior colliculi
• decussation of superior cerebellar peduncle
• cerebral aqueduct
• periaqueductal grey metter
• medial lemniscus
• spinal lemniscus
• cerebral peduncles

Question 16

lower midbrain - inferior colliculi

Answer 16

Question 17

lower midbrain - decussation of superior cerebellar peduncles

Answer 17

Question 18

lower midbrain - cerebral aqueduct

Answer 18

Question 19

lower midbrain - periaqueductal grey matter

Answer 19

Question 20

lower midbrain - substantial nigra

Answer 20

Question 21

cerebral peduncles

Answer 21

Question 22

junction between midbrain and pons

Answer 22

• basilar pons (anteriorly)
• inferior colliculus (posteriorly)

Question 23

junction - basilar pons

Answer 23

Question 24

junction - inferior colliculus

Answer 24

Question 25

upper pons features

Answer 25

• basilar pons
• corticospinal fibers
• superior cerebellar peduncles
• medial lemniscus
• lateral lemniscus

Question 26

upper pons - corticospinal fibers pathway

Answer 26

aka pyramidal tract

Question 27

upper pons - superior cerebellar peduncles

Answer 27

Question 28

upper pons - medial lemniscus

Answer 28

Question 29

upper pons - lateral lemniscus

Answer 29

Question 30

middle pons features

Answer 30

• basilar pons
• corticospinal fibers
• pontocerebellar fibers
• middle cerebellar peduncles
• medial lemniscus
• 4th ventricle

Question 31

middle pons - pontocerebellar fibers

Answer 31

Question 32

middle pons - middle cerebellar peduncles

Answer 32

Question 33

middle pons - medial lemniscus

Answer 33

Question 34

middle pons - 4th ventricle

Answer 34

Question 35

upper medulla features

Answer 35

• inferior olivary nucleus
• medial lemniscus
• pyramids
• 4th ventricle
• inferior cerebellar peduncles

Question 36

upper medulla - inferior olivary nucleus

Answer 36

Question 37

upper medulla - medial lemniscus

Answer 37

Question 38

upper medulla - pyramids

Answer 38

Question 39

upper medulla - 4th ventricle

Answer 39

Question 40

upper medulla - inferior cerebellar peduncles

Answer 40

Question 41

lower medulla features

Answer 41

• gracile fasciculus and nucleus
• cuneate fasciculus and nucleus
• internal arcuate fibers
• medial lemniscus
• pyramids

Question 42

lower medulla - gracile fasciculus and nucleus

Answer 42

Question 43

lower medulla - cuneate fasciculus and nucleus

Answer 43

Question 44

lower medulla - internal arcuate fibers

Answer 44

Question 45

lower medulla - medial lemniscus

Answer 45

Question 46

lower medulla - pyramids

Answer 46