Terms From Lab Exercise 19

Front 1

meninges

Back 1

the brain and spinal cord are protect by three connective tissue membranes known as this

Front 2

dura mater

Back 2

a double layered membrane, one layer periosteal layer is attached to the skull, forming the periosteum. The other forms the meningeal layer, the outermost brain cover and is continuous with the dura mater of the spinal cord.

Front 3

falx cerebri

Back 3

an extension of the dural layers that extends into the longitudinal fissure between the cerebral hemispheres to attache to the crista galli of the the ethmoid boneof the skull

Front 4

superior saggittal sinus

Back 4

collects blood draining from the brain tissue, formed by the falx celebri

Front 5

falx cerebelli

Back 5

seperating the two cerebellar hemispheres

Front 6

tentorium cerebelli

Back 6

seperating the cerebrum from the cerebellum below

Front 7

arachnoid mater

Back 7

this membrane underlies the dura mater

Front 8

subdural space

Back 8

cavity between the dura mater and the arachnoid mater

Front 9

subarachnoid space

Back 9

threadlike projections that bridge the arachnoid space to the innermost meninx pia mater

Front 10

pia mater

Back 10

innermost membrane, highly vascular and clings to the brain

Front 11

arachnoid villi

Back 11

specialized projections of the arachnoid tissue which potrude into the dura mater therefore allowing cerebrospinal fluid to drain back into the venous circulation via the superior sagittal sinus and other sinuses

Front 12

meningitis

Back 12

inflammation of the meninges

Front 13

encephalitis

Back 13

inflammation of the brain

Front 14

hydrocephalus

Back 14

cerebrospinal fluid does not drain therfore leading accumulation of fluid on the brain

Front 15

cerebrospinal fluid

Back 15

this is formed in the choroid plexus, this forms a cushion cushion the protects the brain tissue against blows to the head