Topography of the brain

Question 1

What are the commissural fibres?

Answer 1

connect right and left hemispheres, functionally related structures

Question 2

Name the key commissural fibres

Answer 2

corpus callosum, anterior, hippocampal commissures

Question 3

name parts of corpus callous

Answer 3

Splenium – occipital cortices
Body
Genu
Rostrum – frontal lobes

Question 4

What are the lobes of the cerebrum

Answer 4

frontal parietal temporal occipital limbic

Question 5

What is the cerebrum

Answer 5

The cerebrum: right and left hemispheres comprising grey and white matter.
Frontal lobe
Occipital lobe
Temporal lobe
Parietal lobe

Question 6

lobes - frontal name three key areas

Answer 6

Frontal lobe:
Premotor cortex (area 6)
Frontal eye field (area 8)
Broca’s area (area 44, 45)

Question 7

name two key areas of occipital lobe

Answer 7

Occipital lobe:
Primary visual cortex (area 17)
Visual association cortex

Question 8

name 3 key areas of temporal lobe

Answer 8

Temporal lobe:
Primary auditory cortex (area 41, 42)
Auditory association cortex (Wernicke’s area)

Question 9

where is insula and what role does it have

Answer 9

Insula: deep to the lateral sulcus/fissure; desire, craving, addiction, neuropsychiatric disorders

Question 10

what am I? “connecting white matter tracts between hemispheres”

Answer 10

Corpus callosum: connecting white matter tracts (commissural fibres) between hemispheres.

Question 11

What is the fornix

Answer 11

Fornix: projection fibres connecting the mammillary bodies with the hippocampi; part of the limbic system.

Question 12

name abc

Answer 12

a inferior parietal lobule
b intraparietal sulcus
c superior parietal lobule

Question 13

name def

Answer 13

d post central sulcus
e central sulcus
f pre central sulcus

Question 14

name ghi

Answer 14

g superior frontal gyrus
h middle frontal gyrus
I inferior frontal gyrus

Question 15

name jk

Answer 15

j pre-central gyrus
k post-central gyrus

Question 16

Name brain areas AB

Answer 16

A somatosensory association cortex
B primary somatosensory cortex 1,2,3

Question 17

Name brain areas CDEFG

Answer 17

C primary motor cortex 4
D pre-motor cortex 6
E frontal eye field 8
F pre-frontal cortex
G brocca’s area 44/45

Question 18

What is the corpus striatum comprised of?

Answer 18

Striatum and lentiform nucleus

Question 19

What is the striatum formed of

Answer 19

Caudate nucleus and putamen

Question 20

what forms the lentiform nucleus?

Answer 20

Putamen and globus pallidus (internen and externen)

Question 21

What two things is the putamen part of

Answer 21

Striatum and lentiform nucleus

Question 22

What are basal ganglia

Answer 22

Collections of cell bodies (grey matter) deep within each hemisphere.
Function: regulate motor output, motor learning

Question 23

In this coronal view what is the structure

Answer 23

internal capsule (white matter tracts, projection fibres to sub cortical structures)

Question 24

what are purple structure(s)
coronal slice

Answer 24

Basal ganglia - sub cortical grey matter either side of internal capsule

Question 25

name these areas of this coronal slice

Answer 25

Question 26

what basal ganglia is this

Answer 26

Question 27

Vasculature of brain - what is the ACA and what does it supply?

Answer 27

Anterior cerebral artery (ACA) – medial frontal and parietal lobes

Question 28

Vasculature of brain - what is the MCA and what does it supply?

Answer 28

Middle cerebral artery (MCA) – lateral frontal, parietal, temporal lobes, insula

Question 29

What does the Anterior communicating artery do?

Answer 29

Anterior communicating artery – anastomose ACA

Question 30

What do the vertebral arteries (R and L) feed?

Answer 30

Posterior circulatory system: vertebral arteries (R and L).
Unite at pontomedullary junction to form basilar artery.