Physiology Flashcards
name the main component of CSF
water
where is CSF produced?
secretory epithelium of the choroid plexus
where does the CSF circulate?
subarachnoid space
where is CSF absorbed?
venous circulation
name the 3 major functions of CSF
mechanical protection
homeostatic function
circulation
clinical CSF analysis is obtained via what?
lumbar puncture
where in the brain is the choroid plexus found?
3rd, 4th and lateral ventricles
name the 4 ventricles
2 lateral ventricles
third ventricle
fourth ventricle
what connects the lateral and third ventricle?
foramen of Monroe
what connects the third and fourth ventricle?
cerebral aqueduct
the foramen of Magendie is found on the ______ aperture connecting the fourth ventricle to the subarachnoid space whereas the foramina of _______ is found on the lateral apertures connecting the fourth ventricle to the subarachnoid space.
the foramen of Magendie is found on the MEDIAN aperture (single) connecting the fourth ventricle to the subarachnoid space whereas the foramina of LUSCHKA is found on the lateral apertures (pair) connecting the fourth ventricle to the subarachnoid space.
the subarachnoid space is found between the ___ and ____ _____
the subarachnoid space is found between the PIA and DURA MATER
name the following tumour pathology of the ventricles, choroid plexus and CSF:
(a) found at interventicular foramen
(b) arising from the ependymal cells lining the ventricles
(a) colloid cyst
(b) ependymomas
also choroid plexus tumours
name the following definitions:
(a) accummulation of blood in the ventricles
(b) arterial bleed between skull and dura
(c) venous bleed between dura and arachnoid
(a) ventricular haemorrhage
(b) epidural hematoma
(c) subdural hematoma
the following definitions describe what pathology:
accumulation of CSF in the ventricular system or around the brain (either due to obstruction or overproduction)
subsequent enlargement of one or more ventricles and increase in CSF pressure
hydrocephalus
name the enigmatic condition causing headache and visual disturbances but no imaging features of hydrocephalus despite increased CSF
idiopathic intracranial hypertension