1.1 topography

Question 1

does most computation occur in grey or white matter?

Answer 1

grey

Question 2

a sensory deficit in these ways suggests a lesion where?
1. dermatomal pattern
2. multiple segments
3. homuncular pattern

Answer 2

1. Doral root/ spinal nerve lesion
2. cord lesion
3. lesion above thalamus

Question 3

locked in syndrome

Answer 3

basilar artery occlusion damages corticospinal fibres of pons

Question 4

which ventricle expanding could compress the pons?

Answer 4

fourth

Question 5

where is parietooccipital lobe visible?

Answer 5

medial aspect of a hemisphere

Question 6

which cortex does the uncus contain?

Answer 6

olfactory

Question 7

where can the cerebellar tonsils herniate inferiorly through?

Answer 7

foramen magnum

Question 8

metabolic function of CSF

Answer 8

contains glucose and hormones

Question 9

mechanical function of CSF

Answer 9

shock absorber for brain

Question 10

where is most CSF made?

Answer 10

lateral ventricles

Question 11

pathway of CSF

Answer 11

-lateral ventricles to third ventricle, cerebral aqueduct to fourth ventricle then drains via medial and lateral apertures to subarancoid space

then goes around brain surfaces superficially, then reabsorbed by granulations

Question 12

blockage of aqueduct would cause dilation of which ventricles?

Answer 12

lateral and third