| Term | Definition |
|
meninges |
the inner covering of the brain, consists of three layers |
|
dura mater |
outer layer of the meninges, strong and durable, white connective tissue, has three extentions |
|
arachnoid membrane |
a thin, delicate, cobwebby layer |
|
pia mater |
transparent, adheres to outer surface of the brain and contains blood vessels |
|
falx cerebri |
extention of the dura mater, projects down into the longitudinal fissure to partition the two hemispheres |
|
falx cerebelli |
separates the two lobe of the cerebellum |
|
tentorium cerebelli |
separates the occipital lobe from the cerebellum, forms a "tent" over the cerebellum |
|
leptomeninges |
pia mater + arachnoid membrane |
|
cerebrospinal fluid |
fills the subarachnoid space around the brain and spinal cord, the ventricles, and central canal in the spinal cord |
|
ventricles |
cavities within the brain, 4 in total |
|
choroid plexuses |
networks of capiillaries that project from the pia mater into the lateral ventricles |