Anaesthetics

Question 1

what is nociceptive pain?

Answer 1

normal response to perceived or actual injury to the tissues, occurs in normally functioning nervous system, leads to perception of pain

Question 2

what are nociceptors?

Answer 2

Agamma and C fibre free endings

Question 3

what is chronic pain described as?

Answer 3

over 12 weeks or beyond normal course of how long it should last, can be caused by cancer

Question 4

what do C fibres transmit

Answer 4

dull pain

Question 5

which tracts carry nociception?

Answer 5

spinothalamic

spinoreticular

Question 6

how does tissue injury cause pain?

Answer 6

directly-inflammation and damage to surrounding tissue
indirectly-damage>membrane lipids broken down by phospholipase A2>arachidonic acid, COX changes it to prostaglandins> stimulate nociceptors

Question 7

chronic pain types?

Answer 7

cancer
complex regional pain syndrome
MSK
persistant post op
diffuse idiopathic

Question 8

where is pain signalled to

Answer 8

pons and midbrain (periaqueductal grey, nucleus raphe magnus and locus coerleus) and the thalamus>sensory cortex

Question 9

where do we become aware of pain?

Answer 9

when it reaches somatosensory and anterior cingulate cortices

Question 10

which laminae are pain signals transmitted to?

Answer 10

I and II