Spinal Cord

Question 1

Spinal cord is the home to many ____ centers.

Answer 1

reflex

Question 2

Spinal cord provides communication pathway between —

Answer 2

brain and PNS

Question 3

Spinal cord is _____cm long.

Answer 3

43

Question 4

What separate the spinal cord into right and left sides?

Answer 4

Two longitudinal fissures

Question 5

Cervical enlargement does what?

Answer 5

Supplies nerves to shoulder and arms.

Question 6

Lumbar enlargement does what?

Answer 6

Supplies nerves to pelvis and leg.

Question 7

Spinal cord stops growing at age—

Answer 7

4

Question 8

Cord extends to –

Answer 8

L2 vertebrae

Question 9

Spinal cord exits —

Answer 9

to form the cauda equina

Question 10

The spinal gray matter is located in —

Answer 10

the butterfly shaped gray area in the center of the spinal cord

Question 11

Gray matter contains–

Answer 11

cell bodies, dendrites, axons, neural synapses

Question 12

Gray matter in anterior horns

Answer 12

House cell bodies of somatic motor neurons

Question 13

Nerves are named according to where —-

Answer 13

they exit.

Question 14

Gray matter in posterior horns

Answer 14

House cell bodies of interneurons

Question 15

Lateral horns are only found in —

Answer 15

thoracic and upper lumbar segments

Question 17

Feature abstraction

Answer 17

identification of more complex aspects and several stimulus properties

Question 18

Quality discrimination

Answer 18

the ability to identify submodalities of a sensation (e.g., sweet or sour tastes)

Question 19

Pattern recognition

Answer 19

recognition of familiar or significant patterns in stimuli (e.g., the melody in a piece of music)

Question 20

Structure of a Nerve

Answer 20

Bundle of myelinated and unmyelinated peripheral axons enclosed by connective tissue

Question 21

3 nerve coverings:

Answer 21

Endoneurium, perineurium, epineurium

Question 22

4 types of cranial nerves:

Answer 22

1. sensory
2. special sensory
3. motor
4. mixed

Question 23

Each nerve contains —- nerve fibers.

Answer 23

Thousands

Question 24

Spinal nerves connected to spinal cord by —-

Answer 24

2 roots, dorsal and ventral

Question 25

Dorsal roots contains only ---

Answer 25

sensory (afferent) fibers

Question 26

Dorsal root ganglia contains

Answer 26

cells bodies of nerves in the dorsal root

Question 27

All spinal nerves are---? (sensory, motor, or mixed)

Answer 27

mixed

Question 28

Dorsal ramus---

Answer 28

contains nerves from the skin and muscles of the back

Question 29

Ventral ramus---

Answer 29

contains only motor nerves from the skin and muscles of the legs, arms, and truck

Question 30

Ventral ramus is connected to ---

Answer 30

sympathetic ganglia

Question 31

No ------ go to the sympathetic ganglia.

Answer 31

somatic motor neurons

Question 32

Plexus

Answer 32

area where ventral rami criss-cross and redistribute

Question 33

Each peripheral nerve contains fibers from several ---

Answer 33

spinal nerves

Question 34

Fibers from each spinal nerve travel to the body periphery via --- routes.

Answer 34

several

Question 35

Cervical plexus located ---

Answer 35

ventral rami of C1-C4

Question 36

Cervical plexus does what?

Answer 36

innervates skin of neck and superior part of chest

Question 37

Brachial Plexus located---

Answer 37

ventral rami of C5-T1

Question 38

Brachial plexus does what?

Answer 38

Innervates the shoulder and upper arm

Question 39

Lumbar plexus located---

Answer 39

ventral rami of L1-L4

Question 40

Lumbar plexus does what?

Answer 40

innervates some abdominal wall muscles and skin of the anterior and medial thigh

Question 41

Sacral plexus located ---

Answer 41

ventral rami of L4-S4

Question 42

Sacral plexus does what?

Answer 42

Innervates pelvic region and entire leg except the anteromedial thigh

Question 43

______ innervates entire leg except anteromedial thigh

Answer 43

sciatic nerve

Question 44

Each ventral ramus gives rise to an ______ nerve

Answer 44

intercostal (thoracic)

Question 45

Dermatome

Answer 45

area of skin innervated by a single, spinal nerve

Question 46

All spinal nerves except ____ participate in dermatomes

Answer 46

C1