Chapter 13 Spinal Cord

Question 1

superior end of the spinal cord is located at this bone marking

Answer 1

foramen magnum

Question 2

inferior end of the spinal cord is located at this bone

Answer 2

L1

Question 3

what is found in white matter in the spinal cord

Answer 3

myelinated tracts

Question 4

neuron cell bodies, unmyelinated axons and dendrites create this color tissue in the spinal cord

Answer 4

gray matter

Question 5

major nerve that exits the brachial plexus that extends down the middle of the forearm

Answer 5

median

Question 6

collection of nerve roots in the vertebral canal inferior to the end of the spinal cord

Answer 6

cauda equina

Question 7

tapered inferior end of the spinal cord

Answer 7

conus medullaris

Question 8

wider sections of the spinal cord because of the number of neurons there that supply the arms and legs

Answer 8

cervical and lumbar enlargements

Question 9

term for the network of nerve fibers that extend from the ventral rami of spinal nerves

Answer 9

plexus

Question 10

major nerve that exits the cervical plexus

Answer 10

phrenic

Question 11

major nerve that exits the brachial plexus that runs down the medial side of the forearm

Answer 11

ulnar

Question 12

major nerve that exits the lumbar plexus

Answer 12

femoral

Question 13

major nerve that exits the sacral plexus

Answer 13

sciatic

Question 14

extension of the pia mater below L1

Answer 14

filum terminale

Question 15

place where the filum terminale is anchored

Answer 15

coccyx

Question 16

number of pairs of spinal nerves

Answer 16

31

Question 17

most superficial meninx that surrounds the spinal cord

Answer 17

dura mater

Question 18

the middle “tube” in the spinal cord that contains CSF

Answer 18

central canal

Question 19

what is found in the anterior gray horn of the spinal cord

Answer 19

motor cell bodies

Question 20

what is found in the dorsal root of the spinal cord

Answer 20

sensory axons

Question 21

place near the spinal cord where unipolar sensory neuron cell bodies are found

Answer 21

dorsal root ganglion

Question 22

place near the spinal cord where motor axons are found

Answer 22

ventral root

Question 23

color of the anterior horn of the spinal cord

Answer 23

gray

Question 24

color of the anterior columns of the spinal cord

Answer 24

white

Question 25

are spinal nerves sensory or motor

Answer 25

both

Question 26

is the ventral root sensory or motor

Answer 26

motor

Question 27

is the dorsal root sensory or motor

Answer 27

sensory

Question 28

what is found in the columns of the spinal cords

Answer 28

tracts

Question 29

is the spinothalamic tract motor or sensory

Answer 29

sensory

Question 30

is the reticulospinal tract motor or sensory

Answer 30

motor

Question 31

the name of the major tract that carries impulses from the brain to skeletal muscle

Answer 31

lateral corticospinal tract

Question 32

name the term for an automatic predictable response to a stimulus

Answer 32

reflex

Question 33

the effector in the patellar stretch reflex

Answer 33

quadriceps femoris

Question 34

the receptor in the patellar stretch reflex

Answer 34

muscle spindle

Question 35

the receptor that sends impulses when a muscle is too contracted

Answer 35

Golgi tendon organ

Question 36

the nerve that carries both the afferent and efferent impulses for the patellar stretch reflex

Answer 36

femoral

Question 37

the number of neurons in any stretch reflex

Answer 37

two

Question 38

the part of the reflex arc that detects the stimulus

Answer 38

receptor

Question 39

the part of the reflex arc that carries the impulse to the spinal cord

Answer 39

afferent neuron

Question 40

if this word is used to describe a reflex, you will know that there is an association (integration) neuron in the reflex arc

Answer 40

polysynaptic

Question 41

another word used to describe a reflex with only two neurons

Answer 41

monosynaptic

Question 42

what happens to the effector in the Golgi tendon reflex

Answer 42

relaxation

Question 43

the part of the reflex arc that produces a response

Answer 43

effector

Question 44

name the receptor in the withdrawal reflex

Answer 44

nociceptor

Question 45

name the effectors in the withdrawal reflex

Answer 45

flexor muscles

Question 46

an example of a monosynaptic reflex

Answer 46

stretch reflex

Question 47

the receptor in the pupillary reflex

Answer 47

photoreceptor

Question 48

the effector in the pupillary reflex

Answer 48

constrictor pupillae

Question 49

the nerve that carries efferent fibers for the pupillary reflex

Answer 49

oculomotor

Question 50

the nerve that carries afferent fibers for the pupillary reflex

Answer 50

optic

Question 51

name the effector in an autonomic reflex

Answer 51

smooth, cardiac, glands

Question 52

a negative Babinski sign has which meaning

Answer 52

normal

Question 53

the term for a segment of skin supplied by a specific spinal nerve

Answer 53

dermatome

Question 54

what a muscle spindle can detect

Answer 54

stretch

Question 55

major nerve that exits the brachial plexus and travels along the lateral side of the forearm

Answer 55

radial

Question 56

major nerve that exits out of the brachial plexus and supplies the biceps brachii muscle

Answer 56

musculocutaneous

Question 57

major nerve that exits through the lumbar plexus and supplies the quadriceps femoris muscle

Answer 57

femoral

Question 58

the nerve that innervates the hamstrings originates from this nerve plexus

Answer 58

sacral

Question 59

the nerve that innervates the diaphragm originates from this plexus

Answer 59

cervical

Question 60

CSF is found between these meningeal layers around the spinal cord

Answer 60

pia mater & arachnoid

Question 61

what is found in the central canal of the spinal cord

Answer 61

CSF