Flashcards in Chapter 5 Deck (34)
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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
