Ch exam 3

Card Set Information

Ch exam 3
2011-06-15 13:25:13
Neural Control

Exercsing Muscle
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  1. Central Nervous System
    Brain and Spinal Cord
  2. Brain and Spinal Cord Roles
    Send and Recive messages throught the body
  3. Peripheral Nervous System
    Sensory and Motor
  4. Sensory's Role
    Tells the body what is going on outside from within
  5. Motor's Role
    Sends info from CNS to body parts
  6. Autonomic
    Involuntary Internal function
  7. Golgi Tendon Organ
    Detects Tension of muscle on its tendon Sensitive to change in tension
  8. Kinesthetic Receptors
    Sense the postion and Movement of joints
  9. Sympatic
    Fight or Flight prepare body for crisis
  10. Parasympathetic
    HouseKeeping: Digestive system
  11. Dendrites
    Recive signal
  12. Somatic
    voluntary movement
  13. Cell Body
    Decsion making process
  14. Cell Axon
    Neuron transmitter (impulse takes place)
  15. Myelin Sheath
    Helps velocity of conduct
  16. Synaptic Cleft
    Where chemical is released
  17. Node of Ranvior
    Where impulse jumps from +
  18. Resting Membrane Potential
    Difference between the electrical charges inside + outside a cell, caused by seperation of change across the cell
  19. Depolarzation
    Inside of cell becomes less negative relative to outside

    NA+ (-70mv)
  20. Hyperpolarzation
    inside of cell becomes more negative to outside
  21. Graded Potentials
    Local changes in membrane potential ( De/Hyper polarzation) either.
  22. Action Potential
    Rapid substantial depolarzation of the cell membrane

  23. RMP change and Charge
    • Charge -70
    • Change - 15mv to 20mv
  24. Threshold Stimulis
    All or nothing
  25. Neural Impulse
    • Sodium (Na+)
    • Potassium (K+)
  26. 5 Events of Action Potential
    • Resting State
    • Depolarzation
    • Action Potential
    • Repolazation
    • Return to Resting State
  27. Myelination and Size Relate to Velocity
    • Saltatory conduction
    • Action potentinal travels quickly
    • Action potentinal is faster
    • Conduct Never impulse faster If larger
  28. Synapes
    Impulse transmission of Neurons to another
  29. Muscle Spindale
    Sense how much muscle is strecthed

    • Function:
    • Muscle attached to spindle strecthed neurons on spindle trasmit info to CNS about the muscle length
  30. Synapes Communicate
    • Impulse travels to a Presynaptic axon terminal, Synaptic vesicles to release neurotransmitters to the synaptic cleft
    • neurotransmitters bind to postsynaptic receptors on Postsynaptic neuron
  31. Refactory Period
    • Period of repolarzation
    • Muscle Fiber unable to responed to stimulation
    • Limit motor unit firing
  32. Common Neurotransmitters
    • Acetylcholine
    • Norepinephrine
  33. Neurons Communicate
    • Releasing neurotransmitters across synapses
    • Neurotransmitter bind to receptor
    • De or Hyper polarzation occur
    • Neurotransmitter is destroyed by enzymes into the presynaptic terminal
  34. Mechanorecptor
    • Mechanical force
    • Pressure
    • Touch
    • Vibration
    • Strecth
  35. Thermorecpetor
    Change in Tempature
  36. Nociceptors
    Painful stimuli
  37. Photoreceptor
    Light to allow Vision
  38. Chemoreceptor
    • Chemical Stimuli
    • Foods
    • Ordor
    • Blood concetrations