Spinal Cord and Spinal Nerves - PowerPoint PPT Presentation

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Title:

Spinal Cord and Spinal Nerves

Description:

Dorsal/Ventral nerve fibers. White Matter. Columns ... Phrenic nerve. Innervates diaphragm. Brachial Plexus. C5-T1. Radial nerve. Musculocutaneous nerve ... – PowerPoint PPT presentation

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Title: Spinal Cord and Spinal Nerves


1
Spinal Cord and Spinal Nerves
2
  • General function
  • Location
  • Cervical and Lumbar Enlargements
  • Spinal Nerves
  • Cauda equina

3
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4
Meninges
  • Dura mater
  • Epidural space
  • Arachnoid
  • Subarachnoid space Cerebrospinal Fluid - CSF
  • Pia mater

5
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6
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7
Gray Matter
  • Central Canal
  • Posterior (dorsal) Horns
  • Anterior (ventral) Horns
  • Dorsal/Ventral nerve fibers

8
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9
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10
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11
White Matter
  • Columns (Anterior, Posterior, Lateral)
  • Ascending Tracts
  • Descending Tracts UMN

12
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13
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14
Spinal Reflex Arc
15
Spinal Reflex Arc
  • Receptor
  • Sensory (Afferent) Neuron
  • Spinal Cord
  • Motor (Efferent) Neuron
  • Effector

16
Somatic Reflex
17
Autonomic Reflex
18
Monosynaptic Reflex
19
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20
Polysynaptic Reflex
Interneurons Association neurons In gray matter
of spinal cord
21
Polysynaptic reflex
22
  • Ipsilateral (Withdrawal/Flexor Reflex)
  • Contralateral (Crossed Extensor Reflex)

23
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24
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25
Spinal Nerves
  • 31 pair
  • Dorsal/Ventral Roots
  • Dorsal/Ventral Rami

26
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27
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28
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29
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30
Plexuses
31
Cervical Plexus
  • C1-C4-5
  • Phrenic nerve
  • Innervates diaphragm

32
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33
Brachial Plexus
  • C5-T1
  • Radial nerve
  • Musculocutaneous nerve
  • Ulnar nerve
  • Median nerve

34
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35
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36
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37
Lumbar Plexus
  • T12/L1-L4
  • Femoral nerve

38
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39
Sacral Plexus
  • Sciatic nerve

40
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41
Plexuses
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