Lecture 16- Brainstem 3 Flashcards
What “broadman’s area”the primary motor cortex? What lobe is it located in?
area 4- precentral gyrus of the frontal lobe
Where are the first order neurons for the corticospinal and corticobulbar tracts?
primary motor cotrex (area 4-precentral gyrug of the frontal lobe)
Where does the decussation of the lateral corticospinal tract occur?
caudal medulla
What tract carries taste fibers from the nucleus solitarius to the VPM of the thalamus?
central tegmental tract
Where do fibers in the nucelus of the tractus solitarius project?
- reflex to dorsal motor nucleus of X
- aascending to VPM of thalamus
- Reticular formation and salivtory nuclei
- ascending to parabrachial nucleus
Where do taste fibers in the parabrachial nucleus project?
hypothalamus-visceromotor response
amygdala- learning about food
What pathway do axons use to project from the cochlear nuclei to the inferior colliculus?
lateral lemniscus
What pathway do fibers use to project bilaterally to the superior olivary complex?
trapezoid body
Where do fibers from the superior olivary complex project?
to the inferior colliculus via the lateral lemnsicus
Where do fibers containing auditory information in the inferior colliculus project to?
medial geniculate body (nucleus)(via the brachium of the inferior colliculus)
Where do fibers in the medial geniculate body project?
primary auditory cortex (areas 41)
What is the purpose of the lateral vestibulospinal tract?
antigravity control
Input from the fastigial nucleus of the cerebellum travels in which peduncle to leave the cerebellum?
inferior cerebellar peduncle (ipsilateral)
Input from the dentate, emboliform and glosbose nuclei travel to the contralateral side of the body via what structure?
superior cerebellar peduncle
What system is the superior olivary nucleus involved in?
auditory (S-O–> Sound)
