4.11 Brainstem Class Notes 2 Flashcards
1
Q
What is in the inferior medulla?
A
- central canal
- pyramids
- STT
- DCML synapse (Gracile and cuneate nuclei)
- vestibular nuclei
- spinal accessory nucleus
- oculomotor nuclei
- medial longitudinal fasciculus
2
Q
What is in the upper medulla?
A
- fourth ventricle
- pyramids
- STT
- CN nuclei 7-12 (dorsal)
- ION
3
Q
Structures in the anterior pons
A
descending tracts
4
Q
Structures in the posterior pons (aka tegmentum)
A
ascending tracts
- sensory
- some autonomic
- MLF
cortex » pons » contralateral cerebellum (via ION)
5
Q
What is in the basis pedunculi of the midbrain?
A
- cerebral peduncles
- SN
6
Q
What is in the midbrain tegmentum?
A
- red nucleus
- PPN
- cerebral aqueduct
7
Q
What does the red nucleus receive info from?
A
contralateral cerebellum
8
Q
Where does the red nucleus project?
A
- cerebellum
- rubrospinal tract
- RF
9
Q
cerebral aqueduct is surrounded by
A
periaqueductal gray
10
Q
function of periaqueductal gray
A
- pain suppression
- rxns to pain
- rxns to threats and emotion
**where fight or flight originates
11
Q
pretectal area responsible for
A
3 eye reflexes
12
Q
What projects to the inferior colliculi?
A
cochlear division of CN 8
for auditory relay
13
Q
What is the tectum responsible for?
A
reflexive head movements
