Chapter 5 Flashcards Preview

Neuro Anatomy > Chapter 5 > Flashcards

Flashcards in Chapter 5 Deck (34)
Loading flashcards...
1

Spinal Cord

- 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

2

5 sections of spinal cord/ vertebral column

- cervical
- thoracic
- lumbar
- sacral
- coccygeal sections

3

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

... quadriplegia and even inability to breathe on your own

4

motor signals

efferent

5

sensory signal

afferent

6

main way of communicating info to your body

spinal cord

7

4 basic fiber types that emerge from spinal cord

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

8

to skeletal muscles

General
Somatic
Efferent
(GSE)
- Dorsal Ramus

9

to smooth muscle, heart, and glands

General
Visceral
Efferent
(GVE)

10

from skin

General
Somatic
Afferent
(GSA)
- Dorsal ramus

11

from lungs and digestive tract

Genreal
Visceral
Afferent
(GVA)

12

GSE fibers

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

13

GVE fibers

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

14

GSA fibers

- from skin
- Dorsal ramus
- Ventral ramus
- Dorsal root
- Dorsal horn

15

GVA fibers

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

16

Dorsal Ramus

GSE and GSA fibers to/from dorsal body

17

Ventral Ramus

GSE and GSA fibers to/ from ventral body

18

Rami Communicantes

GVE and GVA fibers

19

Dorsal root

- sensory
- GSA and GVA fibers

20

Ventral root

- motor
- GSE and GVE fibers

21

Ventral horn

- motor
- GSE and GVE

22

Dorsal horn

- sensory
- GSA and GVA

23

line down the middle of the spinal cord

- Anterior median fissure

24

3 major landmarks of interior spinal cord

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

25

Major motor tracts

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

26

lateral corticospinal tract

- 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

27

Anterior corticospinal tract

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

28

Rubrospinal tract

- flexor tone (flex muscles)

29

Lateral vestibulospinal tract

- extensor tone (extend muscles)

30

Major sensory tracts

1) Dorsal columns
2) Spinothalamic
3) Spinocerebellar