Forebrain / Ventricles Flashcards
what is the prosencephalon made up of
outer brain - telencephalon (two swellings either side of midbrain connected by lamina terminals which matures into corpus callous and anterior commissure
inner brain - diencephalon
what are brian structures C shaped
telencephalon folds over developing diencephalon
what does the ventricular system develop from
central canal at the bottom of the initial neural tube
what structures make up the cerebral hemispheres
4 lobes and limbic lobe - encompasses the diencephalon
describe the structure of the lateral ventricles and what connects them
connected by antrum
Anterior horn lies in the frontal lobe
Posterior horn lies in the occipital lobe
Body of the LV lies in the parietal lobe
Inferior horn lies in the temporal lobe
what connects the lateral ventricles to the 3rd ventricle and where does the 3rd ventricle lie
interventrciular foramina
between the thalami
describe the structure of the 4th ventricle
2 lateral apertures (lusaka) and 1 median aperture (magendie)
where is CSF found and how is CSF produced
ventricles and subarachnoid space
ependymal cells in choroid plexus ( in all ventricles)
how does CSF get from the ventricles to the subarachnoid space
via median and lateral apertures of 4th ventricle
where does the csf enter after subarachnoid space
arachnoid granulations into venous dural sinuses
how much csf is produced a day and what is the circulating volume
500 ml / day
normal vol - 150 ml
what condition is caused by excessive CSF production
hydrocephalus
where is the corpus stratum which is the structure and role
between cerebral cortex and diencephalon - internal structures of grey matter
made up of:
globus pallidus + putamen = lentiform nucleus
caudate nucelus
joined together by cellular bridges
what is the diencephalon and what is it composed of
swelling on lateral aspect of central canal made up of: thalamus hypothalamus subthalamus epithalamus
what is the function and anatomy of the thalami
gray matter - departed bay 3rd ventricle
relays all sensory processes except smell
relays all motor processes
anterior nuclear group - relays to cingulate cortex
medial nuclear group relays to prefrontal cortex
lateral nuclear group (in another question)
