Mesencephalon Flashcards
1
Q
Medial geniculate nucleus
A
Relays auditory information from the inferior colliculus
2
Q
Mesenphalic CN V
A
Proprioception of the face
3
Q
Anterolateral system
A
- Pain, temperature & crude touch
- Three ascending pathways
- Spinothalamic tracts
- Spinoreticulotract
- Spinotectal tracts
4
Q
Medial lemniscus
A
- Well localized touch vibration & joint sensation
- Connection between dorsal column nuclei (cuneate & fasiculus) and the thalamus
- Run through the arcuate fibers
5
Q
Red nucleus
A
- Motor nucleus of the midbrain
- Origin of rubrospinal tract
6
Q
Substantia nigra
A
- Pars compacta = source of dopamine
- Dorsal to crus cerebri
7
Q
Ventral Tegmental Area (VTA)
A
- Dopamine source for the mesolimbic and mesocortical reward system
8
Q
Superior cerebellar peduncle
A
Connection to the midbrain
9
Q
Oculomotor nucleus and nerve
A
Motor neurons for ocular muscles except lateral rectus & superior oblique
10
Q
Edgar-Westphal Nucleus
A
- Pupil constriction for accommodation & pupillary light reflex
11
Q
Periaquaductal gray
A
Descending modulation of pain
12
Q
Cerebellar aqueduct (sylvius)
A
CSF pathway from midbrain to 3rd or 4th ventricle
