Spinal Cord

Question 1

cervical enlargement

Answer 1

control shoulder and arm

Question 2

lumbar enlargement

Answer 2

control pelvis and leg

Question 3

myotome

Answer 3

pattern of interaction to muscles on spinal nerves

Question 4

dermatome

Answer 4

pattern of interaction to skin through spinal nerves

Question 5

conus medullaris

Answer 5

where spinal cord tapers into a cord shape

Question 6

filum terminale

Answer 6

fibrous tissue connecting sacrum and conus medullaris that an core and supports spinal cord

Question 7

causa equina

Answer 7

long dorsal and ventral roots exiting cord at distal end

Question 8

a spinal nerve is considered to be what kind of nerve

Answer 8

mixed nerve

Question 9

posterior gray horn contains

Answer 9

somatic and visceral sensory neurons

Question 10

lateral gray horn contains

Answer 10

visceral motor neurons

Question 11

anterior gray horn contains

Answer 11

somatic motor neurons

Question 12

gray commissures

Answer 12

area between horns that contain interneurons

Question 13

ascending tracts carry ______ information

Answer 13

sensory

Question 14

descending tracts carry _______ information

Answer 14

motor

Question 15

meningeal layers (outside to inside)

Answer 15

▫dura
▫arachnoid
▫pia

Question 16

CSF is found where

Answer 16

in the subarachnoid space and central canal

Question 17

function of CSF

Answer 17

shock absorber and transport system for dissolved gases, nutrients, and waste

Question 18

reflex

Answer 18

automatic response coordinated within the spinal cord

Question 19

steps of a reflex arc

Answer 19

▫activation of a receptor
▫activation of a sensory neuron
▫information processed by interneurons
▫activation of motor neuron
▫response by effector organ

Question 20

three parts of a reflex arc

Answer 20

receptor
integration center
effector

Question 21

innate reflex

Answer 21

genetically or developmentally determined

Question 22

acquired reflex

Answer 22

learned

Question 23

somatic reflex

Answer 23

skeletal muscle contractions

Question 24

visceral reflex

Answer 24

smooth/cardiac muscle contractions and glands

Question 25

two types of reflex categorized by processing site

Answer 25

spinal and cranial

Question 26

two types of reflexes categorized by complexity of curcit

Answer 26

monosynaptic and polysynaptic

Question 27

ipsilateral reflex

Answer 27

effector of same side as signal

Question 28

contralateral reflex

Answer 28

effector on opposite side as signal

Question 29

interesegmental reflex

Answer 29

connects multiple levels of spinal cord

Question 30

babinski sign

Answer 30

if the hallux extends when bottom of the foot is stimulated with a blunt object, can identify disease of spinal cord in adults

Question 31

left and right sides of spinal cord are divided by

Answer 31

posterior median sulcus and anterior median fissure

Question 32

spinal nerve is composed of a

Answer 32

dorsal root and ventral root

Question 33

dorsal root carries ______ info

Answer 33

sensory

Question 34

ventral root carries ______ info

Answer 34

motor