Brain meniges

Question 1

is the brain dura matar vascularized and by what mainly

Answer 1

well vascularized

-middle menigeal artery mainly

Question 2

what are the layers of the dura mater

Answer 2

1. External periosteal layer- adheres to the skull

2. Int menigeal layer- continous w spinal dura mater

Question 3

what is the epidural space

Answer 3

virtual space bw duramater and skull

Question 4

what does the venous drainage of the dura mater drain into

Answer 4

pterygoiod venous plexus

Question 5

What happens when there is a tumor formation in dural sleeve in optic canal

Answer 5

will put pressure on CN2 and cause visual field defects

Question 6

what is the cerebellar tentorium

Answer 6

ext of dura mater that seperates he cerebellum from the inf portion of the occipital lobes

Question 7

What is the cerebral falx and whats its attachments

Answer 7

located bw r + l cerebral hemisheres

-attaches on cristea gali, along border of sup saggital sinus, int occipital protuberance

Question 8

what is the cerebellar falx

Answer 8

bw r + l cerebellar hemisphere

Question 9

What is the sellar diaphram

Answer 9

Small dural fold thaat roofs the pituitary fossa that contains a circular hole allowing for passage of the pituitary stalk

Question 10

What inn the tentorial cerebelle

Answer 10

Meningeal branches of opthalmic div(CNV1)

Question 11

What inn the post part of falx cerebra

Answer 11

Meningeal branches of opthalmic div (CnV1)

Question 12

What inn the ant part of falc cerebra

Answer 12

Ant meningeal branch of opthalmic div (V1)

Question 13

what inn the ant cranial fossa

Answer 13

All trigeminal branches

Question 14

What inn the mid cranial fossa

Answer 14

meningeal branch of maxillary div (CN5V2)

Meningeal branch of mandibular div (CN5V3)

Question 15

What inn the post cranial fossa

Answer 15

Meningeal branches of C2 + C3

Question 16

What does a brain freeze refer pain to deep in skull

Answer 16

becuase sensation of inside oral cavity is supplied by branches of the trigeminal n

Question 17

characteristics of the arachnoid matter

Answer 17

loose thin connective layer bw dura and pia mater

avascular

Question 18

characteristics of the pia mater

Answer 18

Inner most layer that intametly covers brain

all cerebral arteries and their branches travel thru the pia mater

Question 19

what is the subarachnoid space and what does it contain

Answer 19

bw arachnoid and pia mater

-Contains CSF and cerebral arteries

Question 20

What is an epidural hematoma

Answer 20

Traumatic injury that leads to rupture of middle menengeal artery which accumulates blood in epidural space

Question 21

what is a subdural hematoma

Answer 21

traumatic injury that causes rupture to the cerebral veins
blood will accumulate in subdural space

(bw dura and arachnoid)

Question 22

What happens in an uncal herniation

Answer 22

when there is a space occupying lesion that develops above tentorum cerebelle pressue is applied to uncus which pits pressure on midbrain affecting motor nucleus of occulomotor n