Spinal Cord Organization

Question 1

function of vertebrae

Answer 1

protection of spinal cord, nerve roots and in conjunction with the ribs—to protect many internal organs

Question 2

portion joining the body to the transverse processes to spinous procsess

Answer 2

lamina

Question 3

opening for sc

Answer 3

foramina

Question 4

connect vertebral body to posterior elements,

Answer 4

pedicles

Question 5

contains the annulus fibrosus and nuslues pulposus

Answer 5

vertebral body

Question 6

“flight or fight response”

Answer 6

sympathetic

Question 7

“rest and digest response

Answer 7

parasympathetic

Question 8

Gut motility

Answer 8

enteric

Question 9

what is the autonomic nervous system

Answer 9

The involuntary control of physiologic functions like cardiovascular, digestive, temperature and reproductive system

Question 10

afferent fibers enter via the dorsal roots)

Answer 10

sensory processing

Question 11

motor neurons leave the cord from the ventral roots

Answer 11

motor outflow

Question 12

Some reflex circuitry is completely contained within the spinal cord

Answer 12

reflexes

Question 13

crossing fibers

Answer 13

Decussation

Question 14

pia extending through the cauda equina from the conus medullaris to the end of the dural sac around the spinal cord

Answer 14

filum terminale

Question 15

tapering caudal end of the spinal cord

Answer 15

conus medallaris

Question 16

pain and temperature pathway

Answer 16

lissauer’s tract

Question 17

ventral =

Answer 17

motor

Question 18

dorsal =

Answer 18

sensory

Question 19

higher numbers

Answer 19

ventral

Question 20

lower numbers

Answer 20

dorsal

Question 21

X

Answer 21

intermedial

Question 22

what is in the dorsal horn

Answer 22

Lissauer’s tract, substantia gelatinosa and body of the horn
Interneurons and projections neurons (many cell bodies) for ascending sensory pathways
Cell bodies on sensory fibers in the Dorsal Root Ganglia

Question 23

what are the dorsal columns

Answer 23

ascending afferents of cutaneous, joint and muscle receptors (axons of the ascending sensory pathways)

Question 24

Cell bodies of large alpha motor neurons to skeletal muscle

Answer 24

ventral horns

Question 25

funiculi =

Answer 25

column

Question 26

cell bodies of neurons

Answer 26

grey matter

Question 27

consists of axons that travel up and down the spinal cord to and from the brain

Answer 27

white matter

Question 28

what is substantia gelatinosa

Answer 28

in posterior grey horn, contains neurons that specifically carry pain and temperature sensations to the brain

Question 29

interneurons that make connections within the spinal cord and neurons that enter ascending pathways carrying sensory info to the brain

Answer 29

posterior grey horn

Question 30

contains cell bodies of motor neurons that activate skeletal muscles

Answer 30

anterior grey horn

Question 31

what are the motor neurons in the anterior grey horn

Answer 31

alpha motor neurons

Question 32

what do AMN do

Answer 32

they leave the cord in the ventral roots and represents the way the nervous system enacts voluntary and involuntary movements

Question 33

contains neurons involved in autonomic functions

Answer 33

intermediate grey matter

Question 34

consists of ascending and descending fibers that carry sensory information to brain and motor ino to the body

Answer 34

white matter

Question 35

what are the bundles of fibers in the white matter

Answer 35

funiculi

Question 36

what are the 3 sections of white matter

Answer 36

posterior, lateral, anterior

Question 37

what is in the dorsal white column

Answer 37

contains gracilis and cuneatus

Question 38

contains descending pathways that are responsible for causing movement

Answer 38

lateral white column

Question 39

contains ascending and descending pathways

Answer 39

ventral white column