Flashcards in CH16: Brainstem Tracts 2 Deck (19):
The pons processes motor information from here
Pons forwards information from the cerebral cortex to here
What nuclei (pons) process sensory info from the face? Which cranial nerve?
- pontine cranial nerve nuclei
- CN V
The pons controls contraction of muscles involved in:
- facial expression (CN VII)
- lateral eye movement (CN VI)
- chewing (CN V)
What does the midbrain connect?
diencephalon » pons
3 regions of the midbrain from anterior to posterior
- basis pedunculi
What does the cerebral aqueduct join?
third and fourth ventricles
What is the cerebral aqueduct?
small canal through the midbrain
What forms the midbrain basis pedunculi?
- cerebral peduncles
- substantia nigra
What are the BG nuclei (again)
midbrain tegmentum: vertical tract positions
- most have similar positions as the pons
**spinothalamic and medial lemniscus are more lateral in midbrain**
What important structures does the midbrain TEGMENTUM contain?
- vertical sensory tracts
- superior cerebellar peduncle
- red nucleus
- CN III and IV nuclei
What does the midbrain TECTUM contain?
- pretectal area
pretectal area is involved in
function of inferior colliculi
relay auditory info from cochlear nuclei to
» superior colliculus
» medial geniculate body (thalamus)
function of superior colliculi
involved in reflexive eye and head movements
cerebellar function is dependent on
input and output connections with brainstem
Cerebellum and brainstem share this tightly confined space