Physiology Flashcards
where is CSF produced?
choroid pexus of the lateral ventricles
where is CSF absorbed?
venous circulation
what does CSF supply and what does it remove?
supplies water, amino acids and ions
removes metabolites
what are the functions of CSF?
mechanical protection
homestatic function
circulation- exchange of nutrients
at what vertebral level is a LP performed?
L3-5
secretion in CSF dependant on active/passive Na+ transport
active
intraventricular foramen of munroe connects which ventricles?
lateral to 3rd
what connects the 3rd to 4th ventricle?
cerebral aqueduct of sylvius
the medial and lateral apertures connect which ventricles?
4th to subarachnoid space
what are the medial and lateral apertures also known as?
foramen of Magendie
foramen of Luschka
what patholgy is common at the interventricular septum?
colloid cyst
the ventricles are lined by what cells?
ependymal cells
define epidural haematoma
arterial bleed between skull and dura mater
define subdural haematoma
venous bleed between dura and arachnoid
define hydrocephalus
accumulation of CSF
what is papilloedema?
otic disc sweeling due to rasied ICP
what drugs can be used to reduce the production of aqeuous?
carbonic anyhydrase inhibitors
descrieb the flow of aqeuous humour?
posterior chamber
anterior chamber
trabecular meshwork
canal of schlemm
give an example of a carbonic anhydrase inhibitor
acetazolamide
what doesnt have a BBB?
circumventricular organs and pineal gland
what are arachnoid granulations?
projections of arachnoid mater allowing CSF to drain into venous sinuses
