Neural Tissue and Spinal Nerves

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Author:
BodeS
ID:
295613
Filename:
Neural Tissue and Spinal Nerves
Updated:
2015-02-23 04:23:22
Tags:
Anatomy
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Description:
types of neurons and parts of a neuron
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  1. nerve
    collection of axons
  2. neural tissue
    • collection of neural cells
    • fxn: communication
    • ex/: multipolar
    • unipolar
    • bipolar
  3. axon
    carry message away from cell body
  4. soma
    • cell body 
    • area that holds nucleus and organelles
  5. dendrite
    • multipolar neurons
    • extensions of cell body
    • carry message toward the cell body
  6. synaptic end
    • end bulb
    • axon terminal
    • holds neurotransmitter in vesicle 
    • relays message to target cell
  7. multipolar neuron
    • efferent
    • carry MOTOR information
    • brain to body
    • fxn: motor/CAUSE change
    • location: brain
    • spinal chord
  8. unipolar neuron
    • afferent
    • carry GENERAL sensory
    • body to brain
    • fxn: REPORT change
    • location: all General Senses
    • most Special Senses
  9. Bipolar Neuron
    • type of unipolar neuron
    • afferent
    • carry SPECIAL sensory
    • fxn: localizing motion and direction
    • location: eyes
    • ears
  10. Peripheral Nervous System
    • PNS
    • autonomic and somatic
  11. Autonomic Nervous System
    • ANS
    • efferent
    • motor
    • brain to body
    • multipolar neurons
    • sympathetic 
    • parasympathetic
    • branch of peripheral nervous system PNS
  12. Somatic Nervous System
    • afferent
    • sensory
    • body to brain
    • two branches: General and Special sensory
  13. General Senses
    • all over body:
    • pain
    • itch
    • temperature
    • touch
    • propioception/pressure
  14. Special Senses
    • all in your head:
    • vision
    • hearing 
    • taste
    • smell
    • balance/equilibrium
  15. ID?
    Fxn?
    Location?
    Structure?
    • ID: multipolar neuron
    • Fxn: motor
    • cause change
    • Location: spinal chord
    • brain
    • Structure: PNS
    • somatic efferent (SE)
    • visceral efferent (VE)
  16. Roots of Spinal Chord
    Characteristics?
    Modality?
    Structure?
    Fxn?
    Location?
    • Characteristics: Ventral and Dorsal Roots
    • Modality: motor&sensory
    • Structure: somatic efferent (SE)
    • visceral efferent (VE)
    • somatic afferent (SA)
    • sensory afferent (SA)
    • visceral afferent (VA)
    • Fxn: efferent&afferent
    • Location: intervertebral foramen
  17. Ganglion
    Characteristics?
    Structure?
    Fxn?
    Location?
    • Characteristics: collection of sensory cell bodies outside the CNS
    • Structure: SA
    • Fxn: General Sensory
    • Location: Dorsal Root
  18. Spinal Nerves
    characteristics?
    fxn?
    structure?
    location?
    • characteristics: ventral & dorsal roots form the spinal nerves in the intervertebral foramen
    • fxn: motor 
    • sensory 
    • structure: PNS
    • location: intervertebral foramen
  19. Ventral Root
    Characteristics?
    Fxn?
    Structure?
    Location?
    • Characteristics: anterior spinal chord root
    • Fxn: all motor
    • Structure: SE+VE
    • Location: intervertebral foramen
  20. Rami
    Fxn?
    fxn: separate location of innervation
  21. Dorsal Root
    Characteristics?
    Fxn?
    Structure?
    Location?
    • Characteristics: posterior spinal chord root
    • Fxn: all sensory
    • Structure: SA+VA
    • Location: intervertebral foramen
  22. Dorsal Primary Ramus:
    where in the body does it go?
     
    • pl. Rami
    • back
    • SE- deep muscles of the back
    • SA- skin of the back
  23. Ventral Primary Ramus
    Structure?
    Location?
    • pl. Rami
    • Structure: all SE/VE/SA
    • Location: all of limbs (anterior/posterior)
    • anterior torso
  24. Rules of Mapping Neurons
    • 1) Modality (given)
    • SA, SE, VE

    • 2) Cell Type
    • SA- unipolar
    • SE- 1 multipolar 
    • VE- 2 multipolar

    • 3) What Root?
    • sensory- Dorsal Root
    • motor- Ventral Root

    • 4) location, location, location
    • skin of back/deep muscles of back- Dorsal Primary Ramus
    • Anywhere else- Ventral Primary Ramus
  25. Ventral Root 
    vs.
    Ventral Primarly Ramus
    • ventral root
    • fxn: all motor
    • structure: SE/VE
    • location: intervertebral foramen

    • ventral primary ramus
    • fxn: branch off neural pathway
    • structure: SE/VE/SA
    • location: distal intervertebral foramen
  26. Dorsal Root
    vs. 
    Dorsal Primary Ramus
    • dorsal root:
    • fxn: all sensory
    • structure: SA/VA
    • location: intervertebral foramen

    • dorsal primary ramus:
    • fxn: branch off neural pathway
    • structure: back
    • SE- deep back muscles
    • SA- skin of back
    • location: distal intervertebral foramen
  27. Modality
    • Efferent: somatic efferent (SE)
    • ex/: skeletal muscle
    • visceral efferent (VE)
    • ex/: cardiac muscle
    • smooth muscle
    • glands
    • Afferent: somatic afferent (SA)
    • ex/: General Senses
  28. Paravertebral Ganglion
    characteristics?
    structure?
    location?
    cells?
    • characteristics: collection of motor cell bodies outside the CNS
    • structure: VE
    • location: outside of ventral root
    • cells: 2 multipolar neurons

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