Chapter 10 CNS/Spinal & Cranial Nerves

Question 1

name the pink highlighted region
explain what it is

Answer 1

cauda aquina
nerve roots coming from bottom of the spinal cord around L1/L2 and run down to sacral region

Question 2

name the pink highlighted region
explain what it is

Answer 2

conus medullaris
tip of spinal cord

Question 3

name the pink highlighted region
explain what it is

Answer 3

filium terminale
ligament extending from conus medullaris to coccyx bone that keeps spinal cord centered and anchored

Question 4

name the layer of the spinal meninge

Answer 4

dura matter (outer layer)

Question 5

name the layer of the spinal meninge

Answer 5

arachnoid mater (middle)

Question 6

name the layer of the spinal meninge

Answer 6

pia mater (innermost)

Question 7

What is the group of three layers of connective tissue covering the brain and spinal column called?

Answer 7

meninges

Question 8

where do you find cerebral spinal fluid (CSF)?

Answer 8

between the arachnoid mater and pia matter in the subarachnoid space

Question 9

name the pink highlighted region
what is it located between?

Answer 9

subarachnoid space
between arachnoid mater and pia mater

Question 10

is this gray matter or white matter in the spinal column?
which way does the matter run?
what is it made of?

Answer 10

gray
laterally through gray matter in that region
non myelinated nerve tissue/neuron cell body

Question 11

is this gray matter or white matter in the spinal column?
which way does the matter run?
what is it made of?

Answer 11

white
runs up and down through the spinal column
mylenated nerve tissue/axons

Question 12

is the white matter or the gray matter mylenated?

Answer 12

white matter

Question 13

name the pink highlighted region

Answer 13

doral root

Question 14

name the pink highlighted region

Answer 14

dorsal ganglion

Question 15

name the pink highlighted park

Answer 15

ventral root

Question 16

is the dorsal root responsible for sensory or motor?

Answer 16

sensory

Question 17

is the ventral root responsible for sensory or motor?

Answer 17

motor

Question 18

are signals going up the spinal cord sensory or motor?

Answer 18

sensory

Question 19

are signals going down the spinal cord sensory or motor?

Answer 19

motor

Question 20

explain ascending neuron sensory path
order neurons

Answer 20

1st order neuron from receptor to spinal cord
2nd order neuron ascends spinal cord to top of brain stem to thalmus
3rd order neuron from thalmus to cerebral cortex

Question 21

explain the descending motor pathway of neurons

Answer 21

upper motor neuron from brain to spinal cord
lower motor neuron from spinal cord to effector