Brainstem and Cerebellum Flashcards
1
Q
embryologicaly,
motor = ____ plate
sensory = ____ plate
A
motor = basal plate
sensory = alar plate
2
Q
describe the anatomic structure of the ventral brainstem
A
4
Q
describe the ventral midbrain
A
- crus cerebri
- interpeduncular fossa
- CN III
5
Q
describe the ventral pons
A
- basilar groove
- CNs V-VIII
- cerebellopontine angle
- vestibular schwannomas can develop here and affect CNs VII and VIII
6
Q
describe the dorsal surface anatomy of the brainstem
A
7
Q
describe the ventral medulla
A
- anterior median fissure
- pyramids
- olives
- CNs IX - XII
9
Q
describe the dorsal midbrain
A
- superior colliculi
- sensory info. passes through here first; if something startling happens, superior colliculi takes over and causes immediate response (turning head, etc).
- inferior colliculi
- involved in hearing
- CN IV
10
Q
A
11
Q
describe the dorsal pons
A
- rostral 4th ventricle
- superior and middle cerebellar peduncles
- facial colliculus
12
Q
describe the dorsal medulla
A
- inferior cerebellar peduncle
- obex
- central canal
- gracile and cuneate tubercles
- Foramen of Magendie
- Foramen of Luschka
13
Q
A
14
Q
describe Wallenberg (Lateral Medullary) syndrome
A
- may arise from occlusion of PICA
- ipsilateral facial anesthesia
- spinal nucleus of trigeminal nerve
- contralateral peripheral anesthesia
- inf. cerebellar peduncle
