Somatosensory system S2M1

Card Set Information

Author:
lancesadams
ID:
86749
Filename:
Somatosensory system S2M1
Updated:
2011-08-11 16:10:33
Tags:
Ross S2M1
Folders:

Description:
Neuro
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user lancesadams on FreezingBlue Flashcards. What would you like to do?


  1. What are the adjacent areas of the somatosensory cortex
    • Postcentral sulcus: Areas 3a, 3b, 1, 2
    • Posterior Parietal cortex: Areas 5, 7
  2. What brodman areas are the somatosensory cortex
    Areas 1, 2, 3a, and 3b
  3. What neuron fiber has no myelin
    C fibers
  4. What are the different axon types found in the afferent pathway
    • alpha
    • Beta
    • Delta
    • C axons
  5. What sense do the alpha axons carry
    Proprioception
  6. What sense do the delta and C axons carry
    Pain and temperature
  7. What kind of sense do the beta axons carry
    Touch sensations mechanoreceptors
  8. What are the order from largest to smallest for the afferent axons and in turn fastest to slowest
    • alpha
    • beta
    • delta
    • C
  9. What axon carries itch
    C fibers
  10. What do the rapidly adapting sensory receptors communicate
    Intensity of touch
  11. What do the sowly adapting sensory receptors communicate
    Timing of touch
  12. What is considered a tactile sensation
    • Touch
    • Pressure
    • Vibration
  13. What are the four modalities of sense
    • Tactile
    • Proprioception
    • Pain
    • Temperature
  14. What are the three primary types of sensory receptors
    • Mechanoreceptors
    • Thermoreceptors
    • Nociceptors
  15. Most somatosensors are which type of sensory receptor
    Mechanoreceptors
  16. What are the different types of mechanoreceptors
    • Pacinian corpuscles
    • Meissners corpuscles
    • Ruffinis endings
    • Hair follicle receptors
    • Merkels disks
    • Free nerve ending
  17. What kind of adaption and modality do the pacinian corpuscles have
    • Rapid adaptation (Intensity)
    • Vibration modality
  18. What kind of adaption and modality do the Meisseners corpuscles have
    • Rapid Adaptation (Intensity)
    • Touch Modality
  19. What kind of adaption and modality do the Ruffuni ending receptors have
    • Slow Adaptation (timing)
    • Pressure modality
  20. What kind of adaption and modality do the Hair follicle receptors have
    • Rapid adaption (Intensity)
    • Touch Modality
  21. What kind of adaption and modality do the Merkels endings have
    • Slow adaption (timing)
    • Touch Modality
  22. What kind of adaption and modality do the Free nerve ending receptors have
    • Adaptation varies
    • Pain, Temp, itch, touch
  23. What are the field sizes of touch receptors
    • Meissners corpuscles - small
    • Pacinian corpuscles - large
    • Merkels disk - small
    • Ruffinis ending - large
  24. Muscle spindle and Golgi tendon are similar to what type of receptors
    • Ruffini endings and Golgi are similar
    • Muscle spindle are unique to muscle
  25. Slowly adapting subtypes of sense receptors provide what kind of information
    Static info
  26. Rapidly adapting subtypes of sense receptors provide what kind of information
    Dynamic info
  27. What three types of receptors are activated by noxious stimuli
    • Mechanical nociceptors
    • Thermosensitive receptors
    • Polymodal receptors
  28. What fibers comunicate cold
    delta
  29. What fibers comunicate heat
    C fibers
  30. What tract does temperature follow
    Spinothalamic (pain as well)
  31. What is a Romberg test
    Have a patient stand with eyes closed, if patient is unable to keep balance they have damage to the dorsal columns
  32. Somatosensory pathways have how many neurons in the relay
    3
  33. The opthalmic division of the Trigeminal nerve provides sensory for
    Eyes and forehead
  34. The maxillary division of the Trigeminal nerve provides sensory for
    Maxilla Central face
  35. The mandibular division of the Trigeminal nerve provides sensory for
    Chin, lower lip, floor of mouth
  36. What are the reflexes involved in the Trigeminal nerve
    • Corneal reflex
    • Suckling reflex
    • Sneeze reflex
    • Jaw Jerk
  37. What is the pathway of the jaw jerk reflex
    • Jaw
    • Mesencephalic nucleus of V
    • Motor Nucleus of V (bilaterally)
  38. What sensory fibers react to pain first and which react to it second
    • Delta with localized intense pain (myelinated)
    • C fibers second, long lasting (unmyelinated)
  39. What temperature must it be for the thermal nociceptors to respond
    Above 45 ˚C, or below 15 ˚C

What would you like to do?

Home > Flashcards > Print Preview