CH16: Brainstem Tracts 2 Flashcards Preview

7303 Neuroanatomy > CH16: Brainstem Tracts 2 > Flashcards

Flashcards in CH16: Brainstem Tracts 2 Deck (19):
1

The pons processes motor information from here

cerebral cortex

2

Pons forwards information from the cerebral cortex to here

cerebellum

3

What nuclei (pons) process sensory info from the face? Which cranial nerve?

- pontine cranial nerve nuclei
- CN V

4

The pons controls contraction of muscles involved in:

- facial expression (CN VII)
- lateral eye movement (CN VI)
- chewing (CN V)

5

What does the midbrain connect?

diencephalon » pons

6

3 regions of the midbrain from anterior to posterior

- basis pedunculi
- tegmentum
- tectum

7

What does the cerebral aqueduct join?

third and fourth ventricles

8

What is the cerebral aqueduct?

small canal through the midbrain

9

What forms the midbrain basis pedunculi?

- cerebral peduncles
- substantia nigra

10

What are the BG nuclei (again)

- SN
- STN
- caudate
- putamen
- GP
- PPN

11

midbrain tegmentum: vertical tract positions

- most have similar positions as the pons

**spinothalamic and medial lemniscus are more lateral in midbrain**

12

What important structures does the midbrain TEGMENTUM contain?

- vertical sensory tracts
- superior cerebellar peduncle
- red nucleus
- PPN
- CN III and IV nuclei

13

What does the midbrain TECTUM contain?

- pretectal area
- colliculi

14

pretectal area is involved in

eye reflexes
- pupillary
- consensual
- accommodation

15

function of inferior colliculi

relay auditory info from cochlear nuclei to

» superior colliculus
» medial geniculate body (thalamus)

16

function of superior colliculi

involved in reflexive eye and head movements

17

cerebellar function is dependent on

input and output connections with brainstem

18

Cerebellum and brainstem share this tightly confined space

posterior fossa

19

summary of cerebellar functions

- coordination of movement
- motor planning
- cognitive functions, including rapid shifts of attention