The anatomy of pain Flashcards
1
Q
4 parts of pain
A
transduction, transmission, modulation and perception
2
Q
Which nerves will have the slowest transduction?
A
Small and unmyelinated
3
Q
A-delta fibres
A
Thermal and mechanical nociceptors terminating in dermis
4
Q
C fibres
A
Unmyelinated = slow
Activated by thermal, mechanical and chemical stimuli
Spinothalamic tract
5
Q
What path does pain take from skin to brain?
A
Dermatome A-delta and c fibres Dorsal root ganglion of spinal cord Dorsal horn Synapse and cross midline
6
Q
What does spinothalamic tract detect
A
Temperature and pain
7
Q
What does dorsal column detect
A
Vibration, pressure, proprioception
8
Q
Unilateral lesion to spinothalamic tract
A
Causes contralateral anaesthesia (loss of pain and temp)
