Chapter 13: Spinal Cord

Question 1

4 Functions of Spinal Cord

Answer 1

Conduction
Neural Integration
Locomotion
Reflexes

Question 2

Cauda Equina and its Location

Answer 2

bundle of nerve roots

bottom of vertebral canal (L2-S5)

Question 3

3 Meninges of Spinal Cord from superficial to deep

Answer 3

Dura Mater
Arachnoid Mater
Pia Mater

Question 4

White Matter

Answer 4

surround gray matter and provide tracks for communication up and down the cord

Question 5

Gray Matter

Answer 5

site of neural integration

Question 6

Gracile Fasciculus

Answer 6

Column: Posterior
Decussation: Yes
Functions: sensations of limbs and trunk position and movement, deep touch, visceral pain

Question 7

Spinothalamic

Answer 7

Column: lateral and anterior
Decussation: yes
Function: sensations of touch

Question 8

Lateral Corticospinal

Answer 8

Column: Lateral
Decussation: yes
Functions: fine control of limbs

Question 9

Lateral Reticulospinal

Answer 9

Column: Lateral
Decussation: No
Functions: balance and poster, regulation of awareness of pain

Question 10

Layers of the nerve

Answer 10

Epineurium
perineurium
endoneurium

Question 11

Ganglion

Answer 11

cluster of neurosomas outside the CNS

Question 12

Cervical

Answer 12

8

Question 13

thoracic

Answer 13

12

Question 14

lumbar

Answer 14

5

Question 15

sacral

Answer 15

5

Question 16

coccygeal

Answer 16

1

Question 17

5 plexuses of the anterior rami

Answer 17

Cervical 
Brachial
Lumbar
Sacral 
Coccygeal

Question 18

Dermatome

Answer 18

area of skin that the spinal cord get sensory information from

Question 19

Reflexes

Answer 19

quick involuntary stereotyped reactions of glands or muscles to stimulation

Question 20

4 properties of reflexes

Answer 20

require stimulus
quick
involuntary
stereotypes

Question 21

Proprioceptors

Answer 21

sense organs specialized to monitor the position and movement of body parts

Question 22

3 classes of nerve fibers in muscle spindles

Answer 22

primary afferent fiber
secondary afferent fiber
gamma motor neurons

Question 23

Reciporocal inhibition

Answer 23

reflex phenomenon that prevents muscles from workinf against each other by inhibiting the antagonist