cerebral blood flow

Question 1

4 types of haemorrhagic strokes

Answer 1

extradural (between dura mater and skull, no true space so putting pressure on brain), subdural (between dura mater and arachnoid mater - bridging veins rupture so lower pressure bleed; space exists so not noticed initially), subarachnoid (between arachnoid mater and pia mater; most vessels and CSF in this space; caused by genetic weakness in vessel walls - berry aneurysms), intracerebral (bleed in brain itself)

Question 2

features of extradural haemorrhagic stroke

Answer 2

trauma, immediate effects; surgical emergency with craniotomy

Question 3

features of subdural haemorrhagic stroke

Answer 3

trauma, delayed effects

Question 4

features of subarachnoid haemorrhagic stroke

Answer 4

ruptured aneurysms; difficult to treat as must get into vessels

Question 5

features of intracerebral haemorrhagic stroke

Answer 5

spontaneous hypertensive; blood accumulates in ventricles and tissue itself

Question 6

what sinus does dura mater open up to form

Answer 6

dura mater opens up in caudal medial to form superior sagittal sinus