Chapter 5

Question 1

Spinal Cord

Answer 1

• inside vertebral column
• wrapped by the 3 layered meninges
• cerebral spinal fluid between 2 layers of meninges
• divided into 5 sections
• spinal nerves come out of spinal cord and go to the peripheral regions of your body

Question 2

5 sections of spinal cord/ vertebral column

Answer 2

• cervical
• thoracic
• lumbar
• sacral
• coccygeal sections

Question 3

Injuries in the cervical area of the spinal cord can cause…

Answer 3

… quadriplegia and even inability to breathe on your own

Question 4

motor signals

Answer 4

efferent

Question 5

sensory signal

Answer 5

afferent

Question 6

main way of communicating info to your body

Answer 6

spinal cord

Question 7

4 basic fiber types that emerge from spinal cord

Answer 7

1) Somatic (bones)
2) Visceral (organs)
3) Efferent (motor)
4) Afferent (sensory)

Question 8

to skeletal muscles

Answer 8

General
Somatic
Efferent
(GSE)
- Dorsal Ramus

Question 9

to smooth muscle, heart, and glands

Answer 9

General
Visceral
Efferent
(GVE)

Question 10

from skin

Answer 10

General
Somatic
Afferent
(GSA)
- Dorsal ramus

Question 11

from lungs and digestive tract

Answer 11

Genreal
Visceral
Afferent
(GVA)

Question 12

GSE fibers

Answer 12

• to skeletal muscles
• Dorsal ramus
• Ventral ramus
• Ventral root
• Ventral horn

Question 13

GVE fibers

Answer 13

• to smooth muscle, heart, and glads
• Rami communicantes
• Ventral root
• Ventral horn

Question 14

GSA fibers

Answer 14

• from skin
• Dorsal ramus
• Ventral ramus
• Dorsal root
• Dorsal horn

Question 15

GVA fibers

Answer 15

• from lungs and digestive tract
• Rami communicantes
• Dorsal root
• Dorsal horn

Question 16

Dorsal Ramus

Answer 16

GSE and GSA fibers to/from dorsal body

Question 17

Ventral Ramus

Answer 17

GSE and GSA fibers to/ from ventral body

Question 18

Rami Communicantes

Answer 18

GVE and GVA fibers

Question 19

Dorsal root

Answer 19

• sensory

- GSA and GVA fibers

Question 20

Ventral root

Answer 20

• motor

- GSE and GVE fibers

Question 21

Ventral horn

Answer 21

• motor

- GSE and GVE

Question 22

Dorsal horn

Answer 22

• sensory

- GSA and GVA

Question 23

line down the middle of the spinal cord

Answer 23

• Anterior median fissure

Question 24

3 major landmarks of interior spinal cord

Answer 24

1) dorsal funiculus
2) lateral funiculus
3) Ventral funiculus
Funiculus=bundle

Question 25

Major motor tracts

Answer 25

1) Lateral corticospinal (bulbar) tract 2) Anterior corticospinal tract 3) Rubrospinal tract 4) Lateral vestibulospinal

Question 26

lateral corticospinal tract

Answer 26

- contralateral body movement - left side of your brain controls right side of the body - right side of your brain controls left side of the body

Question 27

Anterior corticospinal tract

Answer 27

- controls trunk muscles | - standing, sitting, and walking posture

Question 28

Rubrospinal tract

Answer 28

- flexor tone (flex muscles)

Question 29

Lateral vestibulospinal tract

Answer 29

- extensor tone (extend muscles)

Question 30

Major sensory tracts

Answer 30

1) Dorsal columns 2) Spinothalamic 3) Spinocerebellar

Question 31

Dorsal colmuns

Answer 31

- Fasciculus gracilis and fasciculus cuneatus | - fine touch, pressure, proprioception

Question 32

Spinothalamic

Answer 32

- pain, temperature, crude touch

Question 33

Spinocerebellar

Answer 33

- proprioception

Question 34

Spinal cord function

Answer 34

- relaying efferent and afferent information between body and brain - mediating reflexes through the reflex arc