Cerebrospinal fluid Flashcards
what is the cerebrospinal FLUID SECRETED BY
choroid plexus of the ventricles
what does the CSF provide?
water, amino acids, ions
what does CSF remove
metabolites
what are the 3 major functions of CSF
Mechanical protection, homeostatic protection and circulation of nutrients/ waste
how is analysis of CSF done?
lumbar puncture
what colour is normal CSF
clear
what does the neural canal at 3 weeks give rise to
central canal and ventricles
what is the choroid plexus
network of capillaries in walls of ventricles that produce CSF
is CSf production active or passive
active
what is the foramen of Magendie
medial connection between 4th ventricle to subarachnoid space
what connects the 4th ventricle and subarachnoid space laterally
foramina of Luschka
how does the CSF go from lateral ventricles to the 3rd ventricle
through the interventricular foramina
what are the 2 foramen that link the 4th ventricle to subarachnoid space
foramina o fmagendie and luschka
where is the subarachnoid space located
between arachnoid and pia
how does CSF fluid return to venous blood
through arachnoid granulations into superior saggital sinus
where would colloid cysts be found
at the inter ventricular foramen
what are ependymomas
arise from ependymal cells lining the ventricles
what is a ventricular haemmorhage
a collection of blood in the ventricles
what is an epidural haemati=oma
arterial bleed between skull and dura
what is hydrocephalus
accumulation of CSF in ventricular system or around the brain and subsequent enlargement if ventricles results in increased CSF pressure
what is papilloedema
swelling of optic disk
how does papilloedema arise?
increased intracranial pressure in subarachnoid space surround optic nerve
what is glaucoma
increased pressure behind the eyes
why does glaucoma arise?
imbalance between rates of secretion and removal of aqueous humour
what eye drops are used in glaucoma
Dorzolamide
