CNS system

Question 1

the central nervous system is divided into

Answer 1

brain and spinal cord

Question 2

CNS tissue is composed of what 2 things

Answer 2

gray matter (outer portion of cortex) and white matter (inner portion)

Question 3

brain is divided into 3 parts. what are they?

Answer 3

cerebrum, cerebellum, and brainstem

Question 4

_____ is the largest part of the brain

Answer 4

cerebrum

Question 5

also known as forebrain and the surface is covered in sulci and grooves

Answer 5

cerebrum

Question 6

stem like portion that joins cerebrum to pons and cerebellum

Answer 6

midbrain

Question 7

divides the cerebrum into right and left hemispheres

Answer 7

longitudinal sulcus

Question 8

large band of nerve fibers between the right and left hemispheres

Answer 8

corpus callosum

Question 9

makes up the largest part of the midbrain, along with pons and medulla oblongata

Answer 9

cerebellum

Question 10

separated from cerebrum by a long transverse ___

Answer 10

cleft

Question 11

upper part of hindbrain; commissure between cerebrum, cerebellum, and medulla

Answer 11

pons

Question 12

consists of midbrain, pons, and medulla oblongata

Answer 12

brainstem

Question 13

extends between pons and spinal cord

Answer 13

medulla oblongata

Question 14

consists of an inner gray cellular substance and an outer white fibrous substance

Answer 14

spinal cord

Question 15

gray substance forms ____ seen on transverse section

Question 16

the spinal cord extends from the brain to the ____

Answer 16

L1-L2 space

Question 17

pointed end of the spinal cord

Answer 17

conus medullaris

Question 18

delicate fibrous portion that connects the terminal tip to the first coccygeal segment

Answer 18

filum terminale

Question 19

connected to ___ pairs of spinal nerves

Answer 19

31

Question 20

the spinal cord is transmitted through _____ and _____ foramina

Answer 20

intervertebral and sacral

Question 21

_____ refers to the spinal nerves

Answer 21

cauda equina

Question 22

meninges are 3 continuous, protective membranes that enclose the _____ and ______

Question 23

inner sheath; highly vascular and closely adhered

Answer 23

pia mater

Question 24

delicate central sheath

Answer 24

arachnoid

Question 25

outermost meningeal layer, strong and fibrous

Answer 25

dura mater

Question 26

separated from arachnoid by ____ space

Question 27

these spaces do not communicate with ______

Question 28

dura has 4 parts. what are they?

Answer 28

falx cerebra, falx cerebelli, tentorium, dural sac

Question 29

runs through longitudinal tissues and supports tje cerebral hemispheres

Answer 29

falx cerebra

Question 30

separates the cerebellar hemispheres

Answer 30

falx cerebelli

Question 31

tent-shaped fold that separates cerebrum and cerebellum

Answer 31

tentorium

Question 32

encloses cauda equina

Answer 32

dural sac

Question 33

wide space between arachnoid and pia mater

Answer 33

subarachnoid

Question 34

the subarachnoid is _____ with ventricular system

Answer 34

continuous

Question 35

areas of subarachnoid space that are increased in width

Answer 35

subarachnoid cisterns

Question 36

widest of subarachnoid cisterns

Answer 36

cisterns magna

Question 37

there are ___ irregular, fluid-containing cavities

Answer 37

4

Question 38

tissue fluid of the brain and spinal cord that surrounds and cushions CNS

Answer 38

CSF (cerebrospinal fluid)

Question 39

one on each side of MSP in corresponding hemispheres of cerebrum

Answer 39

lateral ventricles

Question 40

connects lateral ventricles to third ventricle

Answer 40

interventricular foramen

Question 41

the interventicular foramen are also called ____

Answer 41

formen of monro

Question 42

slit like cavity somewhar quadrilateral in shape, situated in MSP just inferior to lateral ventricles

Answer 42

3rd ventricle

Question 43

connects third and 4th ventricle, also called ____

Answer 43

cerebral aqueduct, aqueduct of sylvius

Question 44

diamond shaped and located in area of hindbrain, anterior to cerebellum and posterior to pons and upper portion of medulla oblongata

Answer 44

4th ventricle

Question 45

where CSF exits ____ ventricle