Lab 1: Brain Basics, Ventricles, Meninges

dura mater

epidural space: potential space

within dura: dural venous sinuses

arachnoid mater

subarachnoid space: CSF fluid

pia mater

adhered to pia: vessels that supply the brain

meningeal layers

dura mater, arachnoid mater, pia mater

function of meninges

protect and provide structural support for brain

function of dural folds

holds dural venous sinuses in place, provides mechanical support for cerebral hemispheres and cerebellum

function of arachnoid granulations

allows movement of CSF into dural venous sinuses

CSF circulation

plasm → choroid plexus → lateral ventricles → interventricular foramena → 3rd ventricle → cerebral aqueduct → 4th ventricle → foramen of luschka and magendie → subarachnoid space → arachnoid granulations → venous circulation

ventricles function

production and distribution of CSF

CSF produced by

choroid plexus and flows unidirectionally

dural venous sinuses

large venous sinuses that run between periosteal and meningeal layers of the dura mater

function of dural venous sinuses

drain blood from cerebral veins and receive CSF from arachnoid granulations