neuroc1

Question 1

what are the arachnoid mater layers

Answer 1

outer= mesothelial (adherent to dura mater)
inner= trabecular  (forms leptomeningeal bridges to pia mater)

Question 2

what is epidural space

Answer 2

between dura mater and skull.

subdural- dura and arachnoid mater

Question 3

whats the subarachnoid space

Answer 3

bridged by arachnoid trabeculae, blood vessels supply brain in this space. filled with CSF.

Question 4

which artery causes epidural hematoma usually

Answer 4

middle meningeal

Question 5

what usually causes subdural hematoma

Answer 5

jarring of head/shaking

Question 6

what covers the sella turcica

Answer 6

diaphragma sella

its dural membrane extending from anterior clinoid processes to posterior clinoid processess

Question 7

what innervates the supratentorial area dura

Answer 7

trigeminal 5

Question 8

what innervates infrratentorial drua

Answer 8

vagus and cervical spinal nerves c1-c3

Question 9

where do the meningeal layers get blood

Answer 9

dura from middle meningeal (of maxillary of external carotid)
-arachnoid is avascular
pia receives from arteries passing over cerebrum

all the blood supply :

• accessory meningeal
• occipital
• vertebral
• ascending pharyngeal
• anterior ethmoidal
• posterior ethmoidal