Pain Lec 8 and 9

Question 1

Somatosensory system

Answer 1

• Consists of somatic and propioception

Question 2

Somatic

Answer 2

Sensations of the skin

Question 3

Propioception

Answer 3

perception of limb and body positions

Question 4

Sensory systems

Answer 4

• somatosensory
• special senses
• vision
• hearing
• balance and equilibrium
• taste
• smell

Question 5

4 elementary attributes involved in coding of a stimulus

Answer 5

• modality
• location
• intensity
• duration

Question 6

Sensation vs perception

Answer 6

sensation- info that we are aware of

perception - understanding of a stimulus

Question 7

sensory receptors

Answer 7

-detect specific form of E in the external environment

Question 8

Modality

Answer 8

energy form of the stimulus

ex. Is the energy from mechanical or light terms?

Question 9

Different modalities of stimuli and ex

Answer 9

• mechanical: pressure, touch, stretch, acceleration, sound waves
• light
• chemical: taste, smell
• temperature

Question 10

Law of specific nerve energies

Answer 10

A given sensory receptor is specific for each modality

Question 11

Receptors respond to adequate stimuli

Answer 11

• of particular modalilty
• within receptive field
• above threshold/ within certain range of intensity

Question 12

Classes of sensory receptor

Answer 12

• photoreceptors
• chemoreceptors
• thermoreceptors
• mechanoreceptors

Question 13

Photoreceptors sensation info& modality

Answer 13

• vision

- photons of light

Question 14

Chemorecs sensation info & modality

Answer 14

• taste
  
  • chemicals dissolved in saliva
• smell
  - chemicals dissolved in mucus
• pain
  - chemicals in extracellular fluid

Question 15

Thermorecs

sensory and mod

Answer 15

-2 types warm and cold recs
warm- warmth and increase in temp 30-43 degrees
cold- decrease in temp 35-20 degrees

Question 16

Mechanorecs

sensory and mod

Answer 16

Pacinian corpsucle 
    - vibration
   -  pressure
Hair cells
   -sound 
   -sound waves
Balance and equilibrium 
   - acceleration

Question 17

Nociceptors modality

Answer 17

Polymodal

- can have thermo, mechano and chemical recs

Question 18

Somatic sensation comes from

Answer 18

-skin, muscles, tendons , joints

Question 19

4 types of somatic sensation

Answer 19

• tactile
• propioception
• temperature
• nociceptors

Question 20

Tactile sensation includes

Answer 20

• pressure
• touch
• vibration

Question 21

Propioception includes

Answer 21

• stretch of muscles: spingles
• Force: golgi tendon organ
• also: joints, skin

Question 22

Temperature includes

Answer 22

• Transient receptor potential ( TRP ) prots
• Cold : less than 17 to 35 degrees
• Warm: 30 to 42 degrees

Question 23

Nociceptors detect

Answer 23

-noxioud stimuli, noxious mech, noxious temp and some chemicals