Sense Organs

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  1. What are the 3 classes of sensory receptors?
    • exterocepters
    • interocepters
    • proprioceptors
  2. What do sensory receptors do?
    use sensory information to generate a reflex
  3. Exteroceptors:
    • detect stimuli from the outside
    • ex: sense (touch, taste, smell, hearing, vision)
  4. Interoceptors:
    • detect stimuli from the inside
    • ex: blood pressure
  5. Proprioceptors:
    • specialized class of interoceptors
    • ex: muscle memory
  6. Nociceptors:
    pain receptors
  7. Thermoreceptors:
    temperature receptors
  8. Chemoreceptors:
  9. Photoreceptors:
    • changes in light
    • vision
  10. Mechanoreceptors:
    stimuli that distort plasma membranes
  11. How do somatic sensations work?
    stimulus > receptor > apharent > epharent > response
  12. somatic sensation of pain:
    conscious perception of a noxious stimuli
  13. What body system does pain not occur in?
    central nervous system
  14. receptor for pain:
    nocicpeter nerve ending
  15. reaction threshold for pain:
    highly variable among individuals
  16. diversion of pain:
    • decrease in pain perception¬†
    • ex: twitch
  17. visceral pain:
    inside body
  18. referred pain:
    surface of skin
  19. olfactory region:
    mucous membrane of nasal cavity that includes the olfactory nerve
  20. macrosmatic:
    heightened sense of smell detection
  21. microsmatic:
    less sophisticated sense of smell detection
  22. anosmatic:
    without sense of smell
  23. vomeronasal organ:
    • detects pheromones in the air
    • sits on hard pallete in the mouth
    • by-passes hypothalamus and goes straight to CNS
  24. What are pheromones?
    • detectable chemicals that cause changes in animal behavior
    • scent glands, communication, reproduction
  25. gustation sensory:
    sense of taste
  26. gustation receptors:
    • taste cells
    • cluster: taste buds
  27. 4 basic taste sensations:
    • bitter
    • sour
    • sweet
    • salty
  28. importance of saliva:
    • lubricates food as it goes down
    • buffers stomach contents
    • helps dilute chemicals so they can be individually detected
  29. auditory sensory:
    • specialized sense of hearing
    • uses sound waves
  30. How is sound recepted?
    • sound wave enters external ear
    • waves hit ear drum and causes vibrations
    • motion travels from middle ear to vestibule
    • vibration hits fluid-filled sack and goes to cochlear nerve
    • nerve sends transmission to central nervous system
  31. visual sensory receptors:
  32. visual sensory stimulus:
  33. external ear:
    • locates sound
    • made of elastic cartilage
  34. middle ear:
    • detects sound
    • hollow chamber filled with air
    • has bones and muscles that help send vibrations
  35. inner ear:
    recognizes sounds
  36. external layer of the eye:
    • fibrous
    • cornea and sclera
  37. middle layer of eye:
    • vascular
    • ciliary body & muscles, lense, iris, choroid
  38. internal layer of eye:
    • neural
    • retina (light processing)
  39. tepetum lucidum:
    translucent coating behind the retina
  40. what does field of vision depend on:
    how they eye is set on the skull
  41. afferent system:
    • aka sensory neurons
    • receive information from the outside and sends them to other neurons so the body can produce a response
  42. efferent system:
    • aka motor neurons
    • receive info from other neurons and sends that information to effectors (muscles, glands) which produce a reponse
  43. perception of frontal cortex:
    conscious perception
  44. perception of hypothalmus and amygdala:
    • emotional perception
    • motivational
  45. perception of hippocampus:
  46. What part of the ear contains fluid?
    vestibular portion
  47. What bones are in the ear?
    • stapes
    • incus
  48. What part of the eye detects color?
  49. rods show:
    black and white
  50. cones show:
  51. What part of the eye lets light in?
  52. What controls amount of light?
  53. translucent coating behind the retina:
    tapetum ludicum
  54. Which sense organs can be coupled together?
    • olfactory
    • gustation
Card Set:
Sense Organs
2014-09-24 03:16:29

quiz 2, anatomy and physiology
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