Nervous System

Card Set Information

Author:
coolkidalh
ID:
225361
Filename:
Nervous System
Updated:
2013-06-29 13:24:21
Tags:
Nervous System
Folders:

Description:
Test 5 Material
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user coolkidalh on FreezingBlue Flashcards. What would you like to do?


  1. Central Nervous System
    Brain and Spinal cord
  2. Peripheral Nervous System
    • Nerves from CNS to all parts of the body
    • -Cranial Nerves
    • -Spinal Nerves
  3. neurons
    generate and transmit electrical impulses (action potentials)
  4. Glial Cells
    • Support cells for neurons
    • (neuroglia)
  5. excitability/irritability
    receive a stimulus and respond to the stimulus
  6. conductivity
    transmit action potentials
  7. secretion
    release of neurotransmitters
  8. sensation
    • impulses to the CNS from all parts of the body
    • ->by sensory neurons
  9. response
    • impulses from the CNS to different parts of the body
    • ->by motor neurons
  10. integration
    analysis/evaluation/identification of all this sensory information by association neurons
  11. Cranial Nerves
    • 12 pairs
    • ->some mixed, some motor, some sensory
  12. Spinal Nerves
    • 31 pairs
    • ->all mixed
  13. mixed nerve
    • carrying impulses to and away from the spinal cord at the same time
    • has senory and motor impulses running through it
  14. Somatic Division
    • all the nerves going out to skeletal muscle
    • under conscious control
  15. Autonomic Division
    • outside of conscious control
    • internal organs, smooth muscle, cardiac muscle
  16. parasympathetic division
    resting and digesting
  17. sympathetic division
    fight, flight, and fright
  18. dual innervations
    when both sympathetic and parasympathetic fibers go into the same organ
  19. myelin
    • support cells
    • example of a glial cell
  20. Schwann cells
    • types of glial cells that form myelin sheath
    • only in PNS
  21. special characteristics of nerve cells
    • 1. no centrioles -> no cell division
    • 2. nissl bodies (rough E.R.)
    • 3. soma/cyton/nerve cell body
    • 4. dendrites
    • 5. telodendria
    • 6. axon terminals
    • 7. axon
  22. myelination
    • 1. speed of impulse is increased
    • 2. regeneration of damaged axon
  23. astrocytes
    • blood brain barrier
    • recycling neurotransmitters
    • regulate ion concentrations
    • repair damage to neurons with scar tissue
  24. oligodendrocytes
    • form myelin sheath on brain cells
    • only in CNS
  25. microglial
    • cells that perform phagocytosis
    • (specialized white blood cells)
  26. ependymal cells
    • ciliated cells lining the ventricles of the brain and spinal cord
    • move cerebral spinal fluid
  27. radial glia
    • in cerebellum
    • in adults: changing or altering synapses (plasticity)
    • embryonic development: positions neurons (when brain is forming)
  28. plasticity
    happens when you learn new information
  29. Schwann Cells
    myelination of nerve cells in PNS
  30. Satellite Cells
    (amphicytes)
    • regulate ion concentration
    • recycling of neurotransmitters

What would you like to do?

Home > Flashcards > Print Preview