Medulla BASICS Flashcards
1
Q
hypoglossal nucleus
A
CN XII
- medial
- intrinsic/extrinsic muscles of tongue
Lesion:
- ipsilateral deviation
- ipsilateral fasiculations
2
Q
dorsal motor nucleus of X
A
CN X
- medial
- preganglionic parasympathetics to thorax/abdomen
3
Q
ambiguus nucleus
A
CN IX, X
- lateral
- larynx, pharynx, soft palate
Lesion
- hoarseness
- dysphagia
- ipsilateral droop of soft palate arch
- contralateral deviation of uvula
4
Q
solitarius nucleus
A
CN VII, IX, X
- lateral
- taste/sensation from tongue
- sensation from viscera
5
Q
spinal V nucleus
A
CN V (some VII, IX, X)
- lateral
- pain/temp to face/oral cavity
Lesion
-ipsilateral sensory deficit of FACE
6
Q
spinothalamic tract
A
- lateral
- localization of pain/temp in body
Lesion:
-contralateral sensory deficit of body
7
Q
corticospinal tract
A
- medial, ventral
- voluntary fine movement of distal extremities
Lesion
- contralateral deficit
- UMN signs
8
Q
medial lemniscus
A
- medial
- above decussation of dorsal spinal pathway
Lesion:
-contralateral loss of position/vibration in body
9
Q
reticular formation
A
- core
- respiration, HR, BP
10
Q
inferior cerebellar peduncle
A
-major communication cable btwn medulla and cerebellum
Lesion:
-ipsilateral ataxia
11
Q
what structures are affected in a lateral medullary lesion?
A
- ambiguus nucleus
- spinothalamic tract
- spinal nucleus of V
- vestibular nucleus
- solitarius nucleus
- sympathetic fibers leaving from dorsal motor nucleus of X
12
Q
what structures are affected in a medial medullary lesion?
A
- medial lemniscus
- corticospinal tract
- motor fibers leaving from hypoglossal nucleus
