Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NEURO 375 > Brainstem Nuclei > Flashcards

Brainstem Nuclei Flashcards

1
Q

Which cranial nerve does the mesencephalic nucleus V innervate?

A

CN V, trigeminal V3 (mm of mastication)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which cranial nerves does the principal/chief nucleus V innervate?

A

CN V, trigeminal V1-V3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which cranial nerve dies the spinal trigeminal nucleus V?

A

CN V, trigeminal - pain and temp of face and neck / touch of anterior 2/3 tongue / cornea

CN IX, glossopharyngeal - pharynx and esophagus / post 1/3 tongue

CN X, vagus - pharynx, larynx, esophagus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which cranial nerve does the vestibulocochlear nucleus innervate?

A

CN VIII, vestibulocochlear nerve - balance and audition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which cranial nerve does the NTS innervate?

A

rostral:
- CN VII, facial - taste and 2/3 tongue
- CN IX, glossopharyngeal - taste post 1/3 tongue

caudal:
- CN IX, glossopharyngeal - baroR and chemoR
- CN X, vagus - GVA of entire abdomen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which nucleus innervates general sensory afferents? Which cranial nerves does it innervate

A

trigeminal nucleus
GSA: V, VII, IX, X

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which nucleus innervates general visceral afferents? Which cranial nerves does it innervate?

A

NTS
GVA: VII (taste), IX

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which nucleus innervates special sense? Which cranial nerve does it innervate?

A

vestibulocochlear nucleus
special sense: VIII

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which nuclei innervate general somatic efferents? Which cranial nerves do they innervate?

A
  • oculomotor nucleus: III
  • trochlear nucleus: IV
  • abducens nucleus: VI
  • hypoglossal nucleus: XII
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which nuclei innervate general visceral efferents? Which cranial nerves do they innervate?

A
  • EW nucleus: III
  • superior salivary nucleus: VII
  • inferior salivary nucleus: IX
  • DMV nucleus: X
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which nuclei innervate the branchiomotor column?

A
  • trigeminal nucleus: V
  • facial motor nucleus: VII
  • nucleus ambiguus: IX, X
  • spinal accessory C1-C5: XI
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What occurs at the decussation of the pyramids? Which section of the medulla does this occur in?

A

cross over of the descending tracts (motor) - in caudal medulla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the order from top to bottom?

caudal medulla, rostral medulla, closed medulla

A
  1. rostral medulla
  2. closed medulla
  3. caudal medulla
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What occurs at the decussation of internal arcuate fibres? Which section of the medulla does this occur in?

A

crossover of ascending tracts (sensory) - in closed medulla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which level of the medulla can be identified using the inferior olivary nucleus?

A

rostral (open) medulla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which brainstem nuclei can be used to identify the caudal pons level?

A

abducens nucleus, facial nucleus, trigeminal motor nucleus

17
Q

What feature can be used to identify the level of the mid-pons?

A

trigeminal nerve

18
Q

What is the identifying feature of the rostral pons?

A

corticospinal and corticobulbar fibres

19
Q

Where is mickey mouse found?

A

caudal midbrain

20
Q

What is the identifying feature of the caudal midbrain?

A

inferior colliculus (and one-eyed mickey mouse)

21
Q

What is the identifying feature of the rostral midbrain?

A

superior colliculus (and 2-eyed mickey mouse)

22
Q

What are the major ascending tracts in the brainstem?

A
  • dorsal columns/medial lemniscal pathway
  • spinothalamic tract
  • trigeminothalamic tract
23
Q

What are the afferent tracts that pass through the inferior cerebellar peduncle?

A
  • spinocerebellar tract
  • cuneocerebellar tracts
  • olivocerebellar tracts
  • vestibulocerebellar tracts
24
Q

What are the major descending tracts in the brainstem?

A
  • corticospinal
  • corticopontine
  • corticobulbar
  • vestibulospinal
  • reticulospinal
  • rubrospinal
25
Q

What are the functions of the reticular formation?

A
  • controlling arousal and consciousness
  • maintain tone and posture (reticulospinal tracts)
  • autonomic relays (respiratory, cardiac, visceral)
  • perception of pain
26
Q

TRUE or FALSE: reticular formation receives both afferent and efferent projections.

A

TRUE

27
Q

What are the 3 main zones of the reticular formation?

A
  • raphe nuclei (most medial)
  • medial zone
  • lateral zone
28
Q

What are the nuclei of the reticular formation?

A
  • raphe nuclei
  • reticulospinal nuclei
  • cholinergic
  • catecholinergic
  • nuclei for cardiorespiratory center
  • nuclei for visceral sensations
29
Q

Where do the raphe nuclei project to in the brain? Which NT is released in this system? What do the rostral projections affect? caudal projections affect?

A

project to: limbic system
NT: serotonergic
rostral projections affect: sleep patterns
caudal projections affect: afferents from PAG and pain perception

30
Q

Which pathway do opiates act via?

A

pain perception pathway: caudal projections from raphe nuclei –> dorsal horn –> block pain perception from spinothalamic tract

31
Q

What part of the reticular formation is found in the medial zone?

A

reticular activating system (RAS)

32
Q

Is the RAS ascending or descending? What is its function? What happens when it is damaged?

A
  • ascending
  • promote arousal and consciousness
  • damage –> unconsciousness
33
Q

What does the lateral zone of the RF control? Describe the pathway. What happens when there is a lesion?

A
  • control cardiorespiratory reflex
  • pathway: CN IX (chemo/baroreceptors) –> NTS –> reticular zone respiratory centers (vagus efferent path) –> control breathing and HR
  • lesion: unconsciousness/death
34
Q

Which zones of the RF do reticulospinal tracts come from?

A

medial and lateral zones

35
Q

Where do the reticulospinal tracts synapse?

A

directly onto LMNs in the spinal cord

36
Q

What is another name for the medial reticulospinal tract? lateral?

A

medial = pontine reticulospinal tract
lateral = medullary reticulospinal tract

37
Q

What does the pontine (medial) reticulospinal tract control?

A

excitatory to leg extensors and arm flexors (i.e. posture and balance)

38
Q

What does the medullary (lateral) reticulospinal tract control?

A

inhibit all limb musculature especially during REM sleep

NEURO 375 (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions