Intro to pain

Question 1

Does nociception travel ipsilaterally or contralaterally up the spinal cord

Answer 1

Contralaterally

Question 2

What is the function of the dorsal horn

Answer 2

Sensory

Question 3

What is the function of the ventral horn

Answer 3

Motor

Question 4

Describe the spinothalamic ascending pathway in pain

Answer 4

Discriminative aspect of nociception - fast pain

Question 5

Describe the spinoreticular ascending pathway in pain

Answer 5

Responsible for arousal and affective (unpleasantness) aspects - dull pain

Question 6

What ascending pathway transmits fast pain

Answer 6

Spinothalamic

Question 7

What ascending pathway transmits dull pain

Answer 7

Spinoreticular

Question 8

What opiate receptors exist

Answer 8

mu, delta, kamma

Question 9

What is the PAG

Answer 9

Periaqueductal gray, rich in opiod receptors

Question 10

What is the gate control theory of pain

Answer 10

There is a gate preventing excitation of ascending to the brain, when opened more pain is felt.

Question 11

What are the three components of pain

Answer 11

Sensory-discriminative (intensity, location, duration)

Affective-motivational (unpleasantness + desire to escape it)

Cognitive component (judgement, beliefs, memory)