Somatosensory

Question 1

Dorsal Column Pathway

Answer 1

touch, pressure, vibration and proprioception
Decussates in the medulla

Question 2

Anterolateral pathway

Answer 2

Pain, temp, itch, tickle
Decussates in the spinal cord

Question 3

Skin mechanoreceptors. TOUCH - 4 sensory recpetors

Answer 3

Meissner Corpuscle
Hair Root Plexus
Merkel Disc
Ruffini Corpuscle

Question 4

PRESSURE

Answer 4

Merkel disc
Ruffini corpuscle

Question 5

VIBRATION

Answer 5

Meissner corpuscle
Pacinian corpuscle

Question 6

ITCH

Answer 6

Free nerve endings

Question 7

Hapsis recpetors respond to __,__, and ___

Answer 7

touch pressure vibration

Question 8

Proprioceptors respond to ____ and _____

Answer 8

position and rate of movement

Question 9

Trasduction occurs at ___

Answer 9

Receptor endings

Question 10

Cold receptors are activated between __ and

Answer 10

10 and 30

Question 11

Warm recpetors are activated between

Answer 11

30 and 45

Question 12

Where are thermoreceptors present?

Answer 12

skin, hypothalamus, spinal cord

Question 13

3 types of nociceptors

Answer 13

1. Mechanical (pinch, puncture)
2. Thermal
3. Polymodal

Question 14

2 things that nociceptors activate:

Answer 14

1. Spinal reflec pathway
2. Asending pathway to the brain (spinothalamic pathway)

Question 15

5 types of pain

Answer 15

Fast (pin prick sharp and acute)
Slow (deep tissue toothache)
Visceral (organ)
Neuropathic (phantom)
Deffered (ankle sprain in a race)

Question 16

Why is understandong referred pain important?

Answer 16

for diagnoses

Question 17

Referred pain

Answer 17

convergence of somatic and visceral first order neitons on the same order second neuron

Question 18

3 less common headaches

Answer 18

1. Meningitis - inflammation
2. Migraine - vasospasm then vasodilation
3. Hangover - irritation of meninges by alcohol biproducts

Question 19

More Common headaches (3)

Answer 19

1. Tension
2. Sinus
3. Eye strain