pain receptors Flashcards
1
Q
what is pain
A
warning, noxious stimuli, mediated by nociceptors
2
Q
2 types of nociceptors
A
mechanical, chemical
3
Q
mechanical nociceptors
A
direct> pin prick>neutrophi>control inflammation>substance p>soreness
4
Q
chemical nociceptors
A
indirect, muscle soreness (delayed)
5
Q
A-delta receptors
A
Thermo: extreme temp
mechanic: intense pressure
-wide, fast, thin, myelinnation
6
Q
C-fiber
A
polymodal: turn on with any and all stimuli, but must be extreme to send a message
-slow, unmyelinnated
7
Q
Pathway
A
Periphery>spinal cord> (via spinothalamic) midbrain>thamamus>primary somatosensory
8
Q
AB neuron
A
small, fast, very myelinated
