anatomy of space occupying lesions Flashcards
layers of the scalp
Skin
Connective tissue
Aponeurosis
Loose connective tissue
Pericranium
SCALP
why can scalp lacerations bleed excessively
because scalp arteries form a rich anastomotic network
what do sutures (fibrous joints) in the skull do
help prevent skull fractures spreading
layers of meninges
-dura mater
-arachnoid mater
-subarachnoid space
-pia mater
dura mater
arachnoid mater
spidery mother
-arachnoid granulations
pia mater
faithful mother
-adherent to the brain and the blood vessels and nerves entering or leaving brain
what is the diaphragm sellea
tough sheet of dura mater forming a roof over pituitary fossa
why is danger triangle called danger triangle
because any infection there can spread to the brain through the various veins
name the green, purple and yellow arteries
where is subarachnoid space
between the arachnoid and pia
what is hydrocephalus
excessive production, obstruction to flow or inadequate reabsorption leads to an increased CSF volume
