Lec 1 Brain & Circulation

Question 1

Pre-central gyrus is the primary _____ cortex.

Answer 1

Motor

Question 2

Post-central gyrus is the primary _____ cortex.

Answer 2

Sensory

Question 3

Gray matter represents

Answer 3

high densities of cell bodies

Question 4

White matter represents

Answer 4

Myelinated axon tracts

Question 5

Flow of CSF

Answer 5

Lateral ventricle -> foramen of Monro -> 3rd ventricle -> cerebral aqueduct -> 4th ventricle -> apertures (1 med, 2 lat) -> subarachnoid space

Question 6

Functions of CSF

Answer 6

bathes & protects brain

provides buoyancy, prevents compression of cranial nerves

Question 7

CSF is produced where?

Answer 7

choroid plexus

Question 8

What cells produce CSF?

Answer 8

ependymal

Question 9

Hydrocephaly - what is it?

Answer 9

Blockage of ventricular system = increased intracranial pressure.
Impaired circulation of CSF.
Usually from congenital aqueductal stenosis.

Question 10

Hydrocephaly Tx

Answer 10

Ventricular shunt, drains CSF into peritoneal cavity.

Doesn’t reverse damage, only prevents further damage.