CSF & Ventricles Flashcards
Glial cells derived from Neuroectoderm
Astrocytes
Oligodendrocytes
Ependymal cells
Glial cell derived from Mesoderm
Microglia
Schwann cells derived from
Neural Crest Cells
CSF is actively secreted by
- Choroidal plexus
Minor Source;
- Ependymal cells
- Brain substance through Perivascular Space
Ependymal cells encloses tuft of capillaries is called as
Tela choroidae → which forms Choroid plexus
Capillaries forming the tela chotoidae are derived from
Choroidal arteries
Anterior choroidal artery is a branch of
Internal Carotid Artery
Posterior choroidal artery is a branch of
Posterior cerebral artery
Anterior choroidal artery supplies Choroid Plexus of _____________ Ventricles
Lateral Ventricles
Posterior Choroidal Artery supplies Choroid Plexus of ____________ Ventricle
Third(3rd)
Choroid plexus of 4th Ventricle derived from which artery
PICA > AICA
Total volume of CSF produced per day
500-600 ml/day > 600-700 ml/day
Name the aperture through which CSF comes to
Cisterna magna / Cerebellomedullary cistern
from 4th ventricle
Foramen of Magendie
Foramen of Luschka connects
2 lateral Foramen of Luschka;
connects 4th Ventricle to Cerebellopontine Angle Cistern
Foramen of Magendie and Foramen of Luschka are present in the
Inferior Medullary Velum
It forms the roof of 4th ventricle
It is made up of non-nervous tissue
Cistern means
Enlarged Subarachnoid Space
CSF from the Subarachnoid Space will drain into Dural Venous Sinus via
Arachnoid Villi
Bridging vein is content of
Subdural Space
In Subdural haemorrhage, Bridging veins are involved
Hypertrophy of Arachnoid Villi is called as
Arachnoid Granulations / Pacchonion Bodies
Aqueductal Stenoisis leads to ?
Is mc cause for?
Dilation of 3rd Ventricle
Is the mc cause for Congenital Hydrocephalus
Atresia of Foramen Magendie and Luschka seen in
Dandy Walker Syndrome ~ it is due to the Cyst in Posterior Cranial Fossa
→ Dilatation of 4th ventricle
What is Cavum Septum Pellucidum
It is the space between the 2 Septal Leaflets
Present in the early stages of development
Until 36th week of Pregnancy
Cavum Septum Pellucidum is present until
36th week of pregnancy
After that 2 Septal Leaflets will fuse and
Forms Septum Pellucidum
How Cavum Septum Pellucidum gets CSF
It filters CSF from Ventricle through septal leaflets
Has no communication with any ventricle
MC type of Cavum Septum Pellucidum is
Non Communicating Type