Anatomy - Space Occupying Lesions Flashcards Preview

Y3 Neurology > Anatomy - Space Occupying Lesions > Flashcards

Flashcards in Anatomy - Space Occupying Lesions Deck (25)
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1
Q

what are the five layers of the scalp from superficial to deep?

A
skin 
connective tissue 
aponeurosis 
loose connective tissue 
pericranium
2
Q

which layer of the scalp contains the named arteries of the scalp?

A

connective tissue

3
Q

what helps prevent skull fractures from spreading?

A

sutures

4
Q

what type of joint are sutures?

A

fibrous joints

5
Q

what is the thinnest part of the skull?

A

pterion

6
Q

where is the pterion located?

A

at the junction between the frontal, parietal, temporal and sphenoid bones

7
Q

what artery courses over the deep aspect of the pterion?

A

middle meningeal artery

8
Q

what is found adherent to the internal aspect of the skull?

A

dura mater

9
Q

what nerve supplies the dura mater?

A

CN V

10
Q

what is the tough sheet of dura mater that forms a roof over the pituitary fossa called?

A

diaphragm sellae

11
Q

what is the tentorium cerebelli?

A

a sheet of dura mater covering the cerebellum

12
Q

where does the tentorium cerebelli attach?

A

to the ridges of the petrous temporal bones

13
Q

why does the tentorium cerebelli contain a central gap?

A

to let the brainstem pass through

14
Q

where is the confluence of the sinuses found?

A

in the midline of the internal occipital protuberance

15
Q

what artery supplies the medial aspect of the right cerebral hemisphere?

A

right anterior cerebral artery

16
Q

what artery supplies the posterior aspect of the right cerebral hemisphere?

A

right posterior cerebral artery

17
Q

what artery supplies the lateral aspect of the left cerebral hemisphere?

A

left middle cerebral artery

18
Q

name three types of bleeds that can occur in the cranial cavity

A

extradural haemorrhage
subdural haemorrhage
subarachnoid haemorrhage

19
Q

where is an extradural haemorrhage found?

A

between bone and dura

20
Q

what can cause an extradural haemorrhage?

A

ruptured middle meningeal artery

21
Q

what can cause a ruptured middle meningeal artery?

A

trauma to the pterion

22
Q

what can cause a subdural haemorrhage?

A

torn cerebral veins

often caused by falls in the elderly

23
Q

what is a subarachnoid haemorrhage?

A

bleeding into the CSF of the subarachnoid space

24
Q

what can cause a subarachnoid haemorrhage?

A

a ruptured circle of willis aneurysm

25
Q

what is another name for a circle of willis aneurysm?

A

a berry aneurysm