Physiology of Pain

Question 1

Transduction

Answer 1

Activation of nociceptors by stimuli (mechanical, thermal, chemical)

Question 2

Transmission

Answer 2

conduction of pain message to the spinal cord, peripheral nerves carry the pain message to the dorsal horn of the spinal cord.

Question 3

A delta fibers

Answer 3

Large diameter, myelinated fiber, transmits at 60-32 meters per second, transmit fast pain impulses, from acute and mechanical stimuli

Question 4

C fibers

Answer 4

smaller, unmyelinated fiber, that transmit slow pain impulses, dull diffused pain impulses that travel at a slow rate

Question 5

Pain perception

Answer 5

recognizing and defining pain in cortex

Question 6

Pain threshold

Answer 6

is at the point in which the brain recognizes and defines a stimulus as pain, the number and intensity of stimuli to produce as well as duration, will vary from person to person

Question 7

Pain tolerance

Answer 7

is the duration or intensity of pain that person can endure

Question 8

Hyperalgesia

Answer 8

Extreme sensitivity to pain

Question 9

Pain modulation

Answer 9

Changing pain perception, either by facilitating or inhibiting pain signals through the endogenious analgenious system, at the gate control mechanism