Human AP 4.3

  1. 3 basic function of the nervous system
    sensation, integration, motor output
  2. the part of the neuron that recieves cell input
    dendrites
  3. output of information only
    axon
  4. contact between two neuron or neuron & effector cell
    synapse
  5. many extensions from cell body
    multipolar neurons
  6. multipolar neuron include
    motor, pyramidal, and purkinje
  7. special sense, have to main extensions
    Bipolar neurons
  8. has one short extension often found in sensory receptor of the skin
    Unipolar
  9. lipid and protein coverion on axon that increases speed of signal transmission
    myelin sheath
  10. exposed regions of axon are the ______________
    Nodes of ranvier
  11. neuroglial cell that protects
    astrocyte
  12. neuroglial cell that engages in phagocytosis
    Microglia
  13. line cavities and release fluid in the brain and spinal cord
    Ependymal
  14. neuroglial cells that myelinate other neurons
    Oligodendrocytes
  15. myelinate certain axons in the PNS
    schwann cell
  16. surround and support cell bodies
    satellite cell
  17. Little to no repair possible for neuron
    CNS
  18. Regeneration and repair possible
    PNS
  19. Gates that open and close to vibration or pressure
    Mechanical
  20. size of change from resting membrane potential
    amplitude
  21. membrane threshold
    -55 mv
  22. Na and K gates closed
    Resting phase
  23. action ptentials are propogated down the axon by 2 methods, _________ on unmyelinated axons, and __________ at the Nodes of Ranvier on myelinated axons
    • continuos conduction (slow)
    • saltatory conduction (fast)
  24. one presynaptic neuron sends multiple, successive graded potentials
    Temporal summation
  25. groups of interneurons and neuroglia in CNS
    Neuronal pools
  26. patterns of synaptic connections between pools
    Neuronal circuits
Author
Bnasty
ID
335789
Card Set
Human AP 4.3
Description
CHAPTER 11
Updated