intro to cns terms

Question 1

soma

Answer 1

cell body of a neuron

Question 2

synapse

Answer 2

gap between neurones where neurones communicate with one another

Question 3

tracts of white matter

Answer 3

location of the pathway

Question 4

commissure of white matter

Answer 4

tract connects hemispheres

Question 5

lemniscus

Answer 5

narrow strip of fibres

Question 6

capsule

Answer 6

sheet of white matter fibres which borders a nucleus (grey matter)

Question 7

column

Answer 7

longitudinally running fibres

Question 8

how much of the visible surface does the cortex make up

Answer 8

90&

Question 9

thickness of cortex

Answer 9

10mm

Question 10

why are there folds and grooves in the cortex of the brain

Answer 10

increase surface area

Question 11

functions of frontal lobe

Answer 11

• decision making

- skilled voluntary movements

Question 12

functions of parietal lobe

Answer 12

• perception of body

- visuospatial localisation

Question 13

functions of temporal lobe

Answer 13

• auditory perception
• cognition
• memory

Question 14

functions of occipital lobe

Answer 14

• visual perception

Question 15

lobes of the forebrain

Answer 15

frontal
parietal
temporal
occipital

Question 16

structures of the grey matter

Answer 16

thalamus
hypothalamus
basal ganglia
limbic structures

Question 17

thalamus

Answer 17

• relay centre

- directs impulses to cortical areas

Question 18

hypothalamus

Answer 18

• ANS

- links endocrine system to cerebrum

Question 19

limbic structures

Answer 19

• centres for memory and emotion

Question 20

pons

Answer 20

bridge to cerebellum

Question 21

cerebellum function

Answer 21

coordinates movements and balance

Question 22

how is the cerebellum separated from the dorsal brain

Answer 22

4th ventricle