35.txt

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Anonymous
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222777
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35.txt
Updated:
2013-06-07 02:24:09
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33 principles life
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ch 33 principles of life
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  1. All sensory systems convey info as an
    Action potential
  2. These receive sensations from the environment
    Exteroreceptors
  3. These respond to sensations from organs
    Interoreceptors (visceral)
  4. These types of cells convert one type of energy to another
    Receptor
  5. Pressure opens ion channel in
    Mechanoreceptor
  6. 4 chemosensory recepors
    Internal, free nerve endings, odor/food, olfactory.
  7. In fish, what is used for olfaction?
    Body, nose, mouth
  8. In tetrapods, what is used for olfaction
    External and internal naris
  9. Path of smell
    Mucus, dendrites, axon, bulb, brain
  10. Perception of different odors depends on
    Neuron info, intensity, synaptic pattern in cns
  11. There are aprox 10K taste buds in the epithelium on the sides of the
    Papillae
  12. Human tongue picks up on
    Salty, sweet, bitter, sour, and umami
  13. How do we interpret flavor?
    Specific combinations of stiumlated taste buds and pattern they create on the brain.
  14. Stretch receptors are known as
    Proprioceptors
  15. Skeletal muscles have this that transmit info whenever muscle is stretched
    Muscle spindles
  16. Provides info about force on tendons/ligaments
    Golgi tendon organ
  17. Action potential
    Depolarization
  18. When fluid, particles, or pressure cause stereocilia to bend
    It either hyperpolarizes or depolarizes
  19. Position and equilibrium in Invertebrates
    Statocysys with statoliths. Hairs bend and neurons stimulate
  20. Parts of cochlea
    Reissner's membrane and basilar membrane
  21. Two parts of inner ear
    Vestibular apparatus; Cochlea
  22. What do the pressure waves in the cochlea cause?
    Basilar membrane to flex
  23. This is determined by the amplitude of sound waves
    Volume
  24. This is determined by the fequency of sound waves
    Pitch
  25. Two chambers of semicircular canals
    Saccule and utricle
  26. Fluid in semicircular canals
    Endolymph, perilymph
  27. Forward/back or up down movement is controlled by
    Utricile and saccule
  28. Turning of head and angular acceleration
    Semicircular canals
  29. Lag in response of endolymph produces
    Dizziness
  30. Eyes emerge from
    Telecephalon on stalks
  31. The non image forming light sensing organ in invertebrates
    Ocellus
  32. Light sensitive cells
    Photoreceptors
  33. Eyes in curstaceans and insects
    Compound eyes

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