Chapter 14 Study guide

Question 2

Spinal cord functions

Answer 2

conducts signals up and down the body

contains central pattern generators that control

locomotion

mediates reflexes

Question 3

Spinal meninges

Answer 3

dura mater

arachnoid mater

pis mater

Question 4

dura mater

Answer 4

in spinal column called dural sheath

Question 5

epidural space

Answer 5

exists between dura mater and vertebral bone

subarachnoid space filled with CSF

Question 6

pis mater

Answer 6

denticulate ligaments that anchor it to the dura

coccygeal ligament anchors cord to the coccyx

Question 7

Spinal cord structure

Answer 7

gray matter

white matter

Question 8

Gray matter

Answer 8

located deep to the white matter

contains cell bodies

dendrites

synapses

Question 9

white matter

Answer 9

superficial to the gray matter

nerve fibers (axons)

Question 10

posterior horn

gray matter

Answer 10

receives sensory nerve fibers from dorasl root

Question 11

anterior horn

gray matter

Answer 11

contains cell bodies that give rise to motor nerve fibers in ventral root

Question 12

lateral horn

gray matter

Answer 12

throacic and lumbar regions contains cell bodies of sympathetic neurons

Question 13

white matter

Answer 13

dorsal

lateral

ventral columns

Question 14

ascenting tracts

white matter

Answer 14

carry sensory information up to the brain

Question 15

descending tracts

white matter

Answer 15

carry motor commands from the brain to the effectors

Question 16

Nerve

Answer 16

cord composed of nerve fibers (axons) and connective tissue

Question 17

ganglion

Answer 17

swelling along the course of a nerve containing cell bodies or peripheral neurons

Question 18

nerve structure

(deep to superficial)

Answer 18

nerve fiber enclosed in endoneurium

bundled in fasciles

separated by perineurium

epineurium covers the entire nerve

Question 19

spinal nerves

Answer 19

31 total pairs

cervical

thoracic

lumbar

sacral

coccygeal

Question 20

cervical nerves

Answer 20

8

Question 21

thoracic nerves

Answer 21

12

Question 22

lumbar nerves

Answer 22

5

Question 23

sacral nerves

Answer 23

5

Question 24

coccygeal nerves

Answer 24

1

Question 25

nerve plexuses

Answer 25

Cervical

brachial

lumbar

sacral

coccygeal

Question 26

reflex

Answer 26

quick

involuntary

stereotyped reaction to stimulus

Question 27

reflex types

Answer 27

visceral

somatic

Question 28

visceral reflex

Answer 28

reactions of glands

cardiac/smooth muscle

controlled by autonomic nervous system

Question 29

somatic reflex

Answer 29

response of skeletal muscle

controlled by somatic nervous system

Question 30

somatic reflex arcs

Answer 30

sensory (afferent) nerve

integrating center (interneurion)

motor (efferent) nerve