half way quiz

Question 1

role of glutamate

Answer 1

most common excitatory NT in CNS

Question 2

role of glycine

Answer 2

inhibitory

paralyses LMN in REM sleep

Question 3

which symptoms are seen with brown sequard syndrome?

Answer 3

• loss of all modalities at level of lesion
• loss of contralateral spinothalamic modalities 1-2 levels below lesion. (opposite side)
  > as neurones ascend 1-2 segments then decussate.
• loss of dorsal column below level of lesion (same side)

Question 4

astrocytes role

Answer 4

maintenance of BBB

Question 5

microglia role

Answer 5

immune type cell (like macrophages)

Question 6

oligodendrocytes role

Answer 6

myelinate CNS axons

Question 7

meningomyelocoele contains?

Answer 7

CSF and spinal cord

myelo=cord

Question 8

lateral funiculus contains which tracts

Answer 8

corticospinal and spinothalamic

Question 9

dorsal funiculus contains which tracts

Answer 9

dorsal column medial lemniscus system

Question 10

thalamus is part of which division of CNS

Answer 10

dienceophalon (division of forebrain)

Question 11

upper vs lower UMN innervation

Answer 11

upper = bilateral UMN innervation > spared in strokes.

lower = contralateral UMN innervation

Question 12

thalamoperformator arteries branch of?

Answer 12

posterior cerebral

Question 13

role of medial longitudinal fasiculus?

Answer 13

helps to move eye movements together

Question 14

bridging veins transverse which space

Answer 14

subdural space

> subdural haemorrhage elderly prone from mild trauma due to cortical shrinkage

Question 15

emissary veins role

Answer 15

drains scalp into dural venous sinus

Question 16

cerebellar peduncles role

Answer 16

attach cerebellum to brainstem

Question 17

cerebral peduncles role and alternative name

Answer 17

crus cerebri

connect the cerebral hemispheres to the brainstem

Question 18

third ventricle drains into

Answer 18

the cerebral aqueduct THEN into 4th ventricle

Question 19

what is a funiculus?

Answer 19

subdivision of a tract

> contains both ascending and descending axons

Question 20

which test is for gluteus medius weakness

Answer 20

trendelenburg

Question 21

which test is for sensory ataxia

Answer 21

rhombergs

Question 22

superior retinal fibres go which lobe

Answer 22

up parietal lobe

Question 23

INFERIOR retinal fibres go which lobe

Answer 23

inferiorly thru temporal lobe

Question 24

which level does the spinal cord terminate

Answer 24

L1/L2