c.10 Sensory phys.-test1.txt

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  1. electrochemicals are __________ from real world energy into nerve impulses the brain can interpret
  2. those receptors that maintain their higher firing rate the whole time that a stimulus is applied are ________ receptors
  3. ________ receptors alert us to changes in sensory stimuli but decrease their firing rate (sensory adaptation)
  4. to cease paying attention to constant stimuli is ______________
    sensory adaptation
  5. the law of specific nerve energies is that the adequate stimulus requires ____________
    the least amount of input
  6. the increasing amplitude of ___________ increases the frequency of action potentials (respose to stimulus)
    generator potentials
  7. sensory adaptation would occur in __________ and __________ receptors
    olfaction and pain
  8. pathway of somatesthetic senses: skin > 2nd order neuron to _________ > 3rd order input to _____________ cortex
    thalamus; postcentral gyrus
  9. unmyelinated dendrites for touch, cold, hot, pain are _________
    free nerve endings
  10. __________ is when pain receptors synapse with the same neurons as other body areas and cause sensations in undamaged tissue (i.e. heart attack / left arm)
    reffered pain
  11. the smaller the two point touch threshold, the _________________ sensitivity of the area
    greater (fingers: 2mm, back 42mm = less acuity)
  12. sharping of sensation at point of touch and dulling neuron sensation around the peripheral area is _________
    lateral inhibition
  13. salty taste: ____+ and Ca+ cause depolarization
  14. Sour taste: ___+ and Ca+ cause depolarization
  15. Sweet & umami Taste: sugars and G-protein close ____+, leading to depolarization
  16. Bitter taste: quinine binds with G-protein and __+ causing depolarization
  17. odorant molecules depolarize a neuron by binding G-protein and cyclic AMP which open ___ and ___ channels
    Na, Ca
  18. _________ senses are paired with the limbic system
  19. olfactory neurons are bipolar and extend into the nasal cavity. They connect with other things like glomeruli in the __________
    olfactory bulb
  20. the vestibular apparatus and the ___________ form the inner ear
  21. the utricle, saccule, and the semicircular canals are parts of the __________
    vestibular apparatus
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c.10 Sensory phys.-test1.txt
2012-02-17 17:19:11
psu biol141

Sensory physiology c.10 BIOL141 test 1
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