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Neurobiology I > Lecture 4- Brainstem > Flashcards

Lecture 4- Brainstem Flashcards

1
Q

Which cranial nerves have their nuclei in the midbrain? In the pons? And in the medulla oblongata?

A

Midbrain: CN III, IV, V
Pons: CN V, VI, VII, VIII
Medulla: CN V, IX, X, XII

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2
Q

Fill this out

A
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3
Q

Divisions of the Brainstem:

________: only in the midbrain
________: ascending tracts
_________: descending tracts

A

Tectum
Tegmentum
Basilar

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4
Q

Divisions of the Brainstem:

Integrative functions: ________, ______ centers, etc

Cranial nerves and nuclei: ____ out of the 12 pairs

A

consciousness
vital centers
9

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5
Q

Junction between the midbrain and diencephalon:

Conduit Function:
Lobes involved: ______/________, and ______

______, ________, and ________ lemnisci synapse with neurons in the thalamic nuclei

A

parietal, temporal, occipital

spinal, trigeminal, medial

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6
Q

The _______ limb of the internal capsule contains fibers that pass from the lateral ______ nuclei to the frontal lobe

A

ANT
thalamic

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7
Q

Junction between the midbrain and diencephalon:

____________ cortical cross talks with the cerebellum

A

frontal

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8
Q

The corticospinal tract is made up of the _______ _______ and ______ ______ for motor control

A

cerebral cortex; spinal cord

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9
Q

Junction between the midbrain and diencephalon:

Cerebral peduncle has _______ tracts

A

descending

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10
Q

Junction between the midbrain and diencephalon (Conduit functions)

A
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11
Q

Junction between the midbrain and diencephalon:

Integrated Functions:
riMLF: _________ __________ nucleus of _________ __________ _________

________ ________ center: moves our eyes up and down and is the centre for ________ gaze

A

rostral interstitial medial longitudinal fasciculus

vertical gaze

upward

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12
Q

Junction between the midbrain and diencephalon:
The red nucleus is the ________ ________ system

A

UMN control

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13
Q

Junction between the midbrain and diencephalon:

Integrated Functions
Substantia nigra pars compacta- ______ ___________ except eyes

A

somatic motor

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14
Q

Junction between the midbrain and diencephalon (Integrated functions)

A
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15
Q

Parkinson’s Disease involves the degeneration of what structure?

A

Substania Nigra

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16
Q

With Parkinson’s, the neurons die and lose their _______ and there is a lack of _______

A

color; dopamine

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17
Q

A patient who suffers from a left MCA stroke can speak fluently but meaningless to your question. Which type of aphasia is this? Where is the lesion most likely located?

A

Fluent or Conduction Aphasia
Arcuate Fasciculus or Wernicke’s Area

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18
Q

In the Rostral Midbrain at the superior colliculus level involving the integrated functions, the PAG structure does what?

A

controls our perception of pain

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19
Q

Which CNs have their nuclei on the pons?

A

V, VI, VII, VIII

20
Q

CN II starts at the _______ but gets out at the ______ part of the brain

A

tegmentum
basilar

21
Q

VTA in rostral midbrain at the superior colliculus level is for ______ and ________

A

reward and aversion

22
Q

CN III is sympathetic or parasympathetic?

It has two functional components:
1.
2.

A

parasympathetic

somatic motor
visceral motor

23
Q

Rostral Midbrain at the Superior Colliculus Level
( Conduit functions)

A
24
Q

Rostral Midbrain at the Superior Colliculus Level
( Integrated functions)

A
25
Q

Rostral Midbrain at the Superior Colliculus Level
( Decussation)

A
26
Q

Caudal midbrain: inferior colliculus level
(conduit functions)

A
27
Q

Caudal midbrain: inferior colliculus level
(integrated functions)

A
28
Q

Middle/caudal medulla: Sensory Decussation

__________ __________ _____: decussation in the spinal cord

A

Anterolateral spinothalmic tract

29
Q

Middle/caudal medulla: Sensory Decussation

_______ ________ ________ ________: decussation in the caudal medulla

A

Dorsal column medial lemniscus

30
Q

Label this

A

Middle/caudal
Sensory

31
Q

Caudal medulla: Motor Decussation

____________/__________ _____: for cranial motor functions

A

corticobulbar/corticonuclear tract

32
Q

Label this
(integrated functions)

A
33
Q

What is this section?

A

Caudal Medulla
Motor

34
Q

Caudal medulla: Motor Decussation

Corticospinal tract
____-_____% decussation
10-30%
- ________ ________ corticapsinal tract
- _________ corticospinal tract

A

70-90%
Ipsilateral lateral
Anterior

35
Q

Integrated functions of brainstem: Reticular Formation

  • The ascending reticular activating system: ________ and _______
  • Descending spinal tract: _______ _______
A

Arousal; alert

motor control

36
Q

What is this?

A

Vital centers

37
Q

Which ascending sensory and descending motor tracts decussate in the medulla?

____________ ___________ peduncle from contralateral _________

_________ lemniscus

_____-_______% corticospinal tract

A

Inferior cerebellar
olive
medial
70; 90

38
Q

Label this
(decussation)

A
39
Q

Label this
(integrated functions)

A
40
Q

Label this
(conduit function and cranial nerve/nuclei)

A
41
Q

Label this
( integrated function)

A
42
Q

Label this

A
43
Q

Label this
(conduit/CN and nuclei)

A
44
Q

Label this

A
45
Q

Caudal pons
(conduit/CN and nuclei)

A

Neurobiology I (13 decks)

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