Week 2: Pain Flashcards
What is pain
-unpleasant sensation
-discomfort caused by stim.of pain receptors
what causes pain
-Inflammation
- Infection
- Ischemia and tissue necrosis
- Stretching of tissue
- Stretching of tendons, ligaments, joint capsule
- Chemicals
- Burns
- Muscle spasm
what is somatic pain
from the skin (cutaneous)
bone muscle
conducted by sensory fibres
what is visceral pain
originates in organs
conducted by sympathetic fibres
may be acute or chronic
what are sensory dimensions
the perception of pain by the individ
what do sensory dimensions include
location
intensity
pattern
quality
pain threshold
point at which stimulus is perceived as pain
whats a pain tolerance
max intensity or duration of pain that a person can endure before acting
whats an autonomic pain response
protecting an individual
ex. moving hand from a hot stove
whats a behavioural pain resposne
learned behav as a method to coping with the pain
ex. rubbing a sore leg
what is hyperalgesia
-increased sensit to pain
-result of damage to nociceptors or peripheral nerves
ex. shingles
what are the 4 major processes of nociception
transduction
transmission
perception
modulation
what is transduction
conversion of a
- mechical
- thermal
- chemical stimulus
- neuronal ap
mechanical stimulus
trauma
surgery
muscle spasm
thermal stimulus
extreme heat or cold