E3: Ch 16

Question 1

organ that is the pathway for sensory and motor impulses

Answer 1

spinal cord

Question 2

spinal cord is responsible for __ which are the quickest reaction to a stimulues

Answer 2

reflex

Question 3

the cord is slightly flattened __ and ___

Answer 3

posteriorly, anteriorly

Question 4

5 parts of the cord

Answer 4

cervical, thoracic, lumbar, sacral, coccygeal

Question 5

the __ of the cord changes along its length

Answer 5

diameter

Question 6

cervical enlargement of the cord innervates the ___ ___

Answer 6

upper limbs

Question 7

the lumbosacral enlargement innervates the __ __

Answer 7

lower limbs

Question 8

name for the tampering of the end of the cord, the “official end”

Answer 8

conus medullaris

Question 9

groups of spinal nerves are called

Answer 9

cauda equina

Question 10

the cord is protected and encapsulated by ___

Answer 10

meninges

Question 11

the epidural space is between the __ and the __

Answer 11

dura mater, periosteum

Question 12

what is the most external meninges of the cord

Answer 12

dura mater

Question 13

the __ space separates the dura mater from the arachnoid

Answer 13

subdural

Question 14

which meninge contains CSF

Answer 14

subarachnoid space

Question 15

the __ __ adheres to the cord

Answer 15

pia mater

Question 16

the Pia mater has lateral extensions called __ __

Answer 16

denticulate ligaments

Question 17

the denticulate ligaments suspend and anchor the cord laterally to the __ __

Answer 17

dura mater

Question 18

gray matter contains everything except

Answer 18

myelinated axons

Question 19

white matter contains

Answer 19

myelinated axons

Question 20

gray matter is __ located in the spinal cord

Answer 20

centrally

Question 21

anterior horns of the gray matter house ___ motor neurons and innervate __ muscle

Answer 21

somatic, skeletal

Question 22

lateral horns are found in what region of the spine

Answer 22

thoracic

Question 23

lateral horns contain cell bodies of __ motor neurons

Answer 23

autonomic

Question 24

the gray commissure is a communication route between the __ and ___ sides

Answer 24

right, left

Question 25

cell bodies in gray matter are called

Answer 25

nuclei

Question 26

sensory nuclei contain bodies of __ sensory nuclei and __ sensory nuclei

Answer 26

somatic, visceral

Question 27

anterior horns contain __ nuclei

Answer 27

motor

Question 28

lateral horns contan __ motor nuclei

Answer 28

autonomic

Question 29

the 3 regions of the white matter are known are

Answer 29

funiculus

Question 30

the posterior and lateral funiculus are __

Answer 30

sensory

Question 31

the anterior funiculus are __

Answer 31

motor

Question 32

spinal nerves are names because they exit __ the vertebra of the same number

Answer 32

below

Question 33

how many pairs of spinal nerves are there

Answer 33

31

Question 34

spinal nerves are made of __ and __ axons

Answer 34

motor, sensory

Question 35

the spinal nerves contain 3 layers of “wrappings”

Answer 35

end,peri, and epi-neurium

Question 36

anterior rootlets merge to form a __ __ root

Answer 36

single anterior

Question 37

anterior roots contain only what type of axons

Answer 37

motor

Question 38

posterior roots contain only what type of axons

Answer 38

sensory

Question 39

cell bodies of the sensory axons arise from cell bodies in the __ __ ganglion

Answer 39

posterior root

Question 40

spinal nerves unite within the __ __ to become a spinal nerve

Answer 40

intervertebral foramen

Question 41

is the spinal cord shorter than the vertebral canal

Answer 41

true

Question 42

what vertebra does the spinal cord end

Answer 42

L1

Question 43

after leaving the intervertebral foramen, a typical spinal nerve splits into branches termed

Answer 43

rami

Question 44

start on slide 35 here