Anatomy of SOLs

Question 1

layers of the scalp

Answer 1

SCALP:

• Skin
• Connective Tissue
• Aponeurosis
• Loose Connective Tissue
• Pericranium

Question 2

name the thinnest part of the skull

Answer 2

pterion

Question 3

what artery runs deep to the pterion

Answer 3

middle meningeal artery

- fracture to pterion can cause intra-cranial bleed

Question 4

name the layers of the meninges

Answer 4

Dura
Arachnoid
Pia

Question 5

nerve supply to the dura

Answer 5

CN V

Question 6

what is the diaphragm sellae

Answer 6

part of dura that forms roof over the pituitary fossa

Question 7

features of the arachnoid layer

Answer 7

has granulations that reabsorb CSF

Question 8

which meningeal layer is in contact with the brain

Answer 8

Pia

Question 9

what is the tentorium cerebelli

Answer 9

sheet of dura that ‘tents’ over the cerebellum

Question 10

what is the falx cerebri

Answer 10

dura that separates the 2 cerebral hemispheres

Question 11

where is CSF produced

Answer 11

choroid plexus of lateral + 3rd ventricles

Question 12

where is the subarachnoid space

Answer 12

between arachnoid + Pia mater

• completely surrounds brain + spinal cord
• ends at S2

Question 13

what connects 3rd + 4th ventricle

Answer 13

cerebral aqueduct

Question 14

what connects 3rd + lateral ventricle

Answer 14

foramina of monroe

Question 15

what is an extradural bleed between

Answer 15

bone + dura

- e.g. ruptured middle meningeal artery through pterion trauma

Question 16

what is a subdural bleed between

Answer 16

dura + arachnoid

- e.g. torn cerebral veins through fall in elderly

Question 17

what is a subarachnoid bleed

Answer 17

bleeding into CSF

- e.g. ruptured circle of willis

Question 18

where is the problem in expressive aphasia

Answer 18

Brocca’s area in frontal lobe

Question 19

where is the problem in receptive aphasia

Answer 19

Wernicke’s area in temporal lobe

Question 20

role of frontal lobe

Answer 20

memory
behaviour / personality
movement - pre central gyrus

Question 21

role of parietal lobe

Answer 21

sensory cortex - post central gyrus

body orientation

Question 22

where is the primary motor cortex located

Answer 22

pre central gyrus in the frontal lobe

Question 23

where is the primary sensory cortex located

Answer 23

post central gyrus in parietal lobe

Question 24

what is the superior temporal gyrus responsible for

Answer 24

reception + processing of sound

Question 25

where is the superior temporal gyrus located

Answer 25

temporal lobe

Question 26

what separates the frontal + parietal lobes

Answer 26

central sulcus

Question 27

what separates the frontal + parietal lobes from the temporal lobe

Answer 27

lateral sulcus

Question 28

what embryological structure does the cerebrum develop from

Answer 28

prosencephalon