internal structure of the brainstem Flashcards

1
Q

differences between the sections through the midbrain

A
  • upper midbrain: red nucleus and the oculomotor nerve are present
  • lower midbrain: decussation of the superior cerebellar peduncles are present
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2
Q

red nucleus

A
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3
Q

oculomotor nerve

A
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4
Q

decussation of the superior cerebellar peduncles

A
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5
Q

where is the olive located

A

the upper part of the medulla

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6
Q

upper midbrain features

A
  • superior colliculi
  • red nucleus
  • cerebral aqueduct
  • periaqueductal grey matter
  • medial lemniscus
  • spinal lemniscus
  • substantia nigra
  • cerebral peduncles
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7
Q

upper midbrain - medial lemniscus pathway

A
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8
Q

upper midbrain - spinal lemniscus pathway

A
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9
Q

upper midbrain - superior colliculi

A
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10
Q

upper midbrain - red nucleus

A
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11
Q

upper midbrain - cerebral aqueduct

A
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12
Q

upper midbrain - periaqueductal grey matter

A
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13
Q

upper midbrain - substantial nigra

A
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14
Q

upper midbrain - cerebral peduncles

A
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15
Q

lower midbrain features

A
  • inferior colliculi
  • decussation of superior cerebellar peduncle
  • cerebral aqueduct
  • periaqueductal grey metter
  • medial lemniscus
  • spinal lemniscus
  • cerebral peduncles
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16
Q

lower midbrain - inferior colliculi

A
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17
Q

lower midbrain - decussation of superior cerebellar peduncles

A
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18
Q

lower midbrain - cerebral aqueduct

A
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19
Q

lower midbrain - periaqueductal grey matter

20
Q

lower midbrain - substantial nigra

21
Q

cerebral peduncles

22
Q

junction between midbrain and pons

A
  • basilar pons (anteriorly)
  • inferior colliculus (posteriorly)
23
Q

junction - basilar pons

24
Q

junction - inferior colliculus

25
upper pons features
- basilar pons - corticospinal fibers - superior cerebellar peduncles - medial lemniscus - lateral lemniscus
26
upper pons - corticospinal fibers pathway
aka pyramidal tract
27
upper pons - superior cerebellar peduncles
28
upper pons - medial lemniscus
29
upper pons - lateral lemniscus
30
middle pons features
- basilar pons - corticospinal fibers - pontocerebellar fibers - middle cerebellar peduncles - medial lemniscus - 4th ventricle
31
middle pons - pontocerebellar fibers
32
middle pons - middle cerebellar peduncles
33
middle pons - medial lemniscus
34
middle pons - 4th ventricle
35
upper medulla features
- inferior olivary nucleus - medial lemniscus - pyramids - 4th ventricle - inferior cerebellar peduncles
36
upper medulla - inferior olivary nucleus
37
upper medulla - medial lemniscus
38
upper medulla - pyramids
39
upper medulla - 4th ventricle
40
upper medulla - inferior cerebellar peduncles
41
lower medulla features
- gracile fasciculus and nucleus - cuneate fasciculus and nucleus - internal arcuate fibers - medial lemniscus - pyramids
42
lower medulla - gracile fasciculus and nucleus
43
lower medulla - cuneate fasciculus and nucleus
44
lower medulla - internal arcuate fibers
45
lower medulla - medial lemniscus
46
lower medulla - pyramids