FSG 4 Flashcards
functions of inferior medulla
- MLF coordinates eye and head movements
- connect SC to contralateral CC
- CN V fibers transmit pain and temperature info (synapse in caudal medulla)
functions of superior medulla
- regulate head and eye movements and postural activity
- coordinate cardiovascular control, breathing, head movements, and swallowing
What’s in the inferior medulla?
- central canals
- pyramids
- olive
- pyramidal decussation
- STT
- DCML synapse
- CNs
- MLF
What’s in the superior medulla?
- 4th ventricle
- CN nuclei clustered dorsally
- nucleus ambiguus
- pontomedullary junction
- ION
Which CN nuclei are clustered in the superior medulla (dorsally)
- hypoglossal
- dorsal motor of x
- solitary nucleus
- vestibular nuclei
What does the nucleus ambiguus do?
contributes to motor for
- pharynx
- larynx
- esophagus
Where is the central canal?
lower medulla, continuous with SC
Where is the 3rd ventricle?
junction between midbrain and pons
Where is the 4th ventricle?
upper medulla
What are the primary medullary functions?
- CV control
- breathing
- head movement
- swallowing
- eye and head movements
- some reflex circuits
What is in the anterior pons?
- descending tracts
- pontine nuclei
- pontocerebellar axons
anterior pons: descending tracts
- CST
- corticobrainstem
- corticopontine
What is in the posterior pons?
- sensory tracts
- RF
- autonomic pathways
- MLF
- CN nuclei 5-7
How does the pons connect to the cerebellum?
via pontocerebellar fibers via middle cerebellar peduncle
What are the 3 major parts of the midbrain?
- basis pedunculi
- midbrain tegmentum
- midbrain tectum
