PTRS 852: Somatosensory

Question 1

Where are sensory receptors located on neurons?

Answer 1

Distal end

Question 2

Term: Mechanoreceptor

Answer 2

Respond to mechanical deformation by touch, pressure, stretch or vibration

Question 3

Term: Chemoreceptor

Answer 3

Respond to substances released by cells

Question 4

Term: Thermoreceptor

Answer 4

Respond to heat or cold

Question 5

Term: Nociceptor

Answer 5

A receptor sensitive to stimuli that may result in danger resulting in pain sensation

Question 6

T/F: Receptive fields are smaller distally on the body.

Answer 6

True

Question 7

Receptor: Muscle spindle (Ia)

Answer 7

Proprioceptive receptor sensitive to muscle stretch

Question 8

Receptor: Golgi tendon (Ib)

Answer 8

Proprioceptive receptor sensitive to tendon tension

Question 9

Receptor: Ligament receptors (Ib)

Answer 9

Proprioceptive receptor sensitive to ligament tension

Question 10

Receptor: Muscle spindles (II)

Answer 10

Proprioceptive receptor sensitive to muscle tension

Question 11

Receptor: Paciniform & Ruffini type (II)

Answer 11

Proprioceptive receptor sensitive to joint mov’t

Question 12

Receptors: Meissner’s & Pacinian (A beta)

Answer 12

Cutaneous receptors sensitive to touch and vibration

Question 13

Receptor: Ruffini’s (A beta)

Answer 13

Cutaneous receptor sensitive to skin stretch

Question 14

Receptor: Merkel’s & Hair follicles (A beta)

Answer 14

Cutaneous receptors sensitive to pressure

Question 15

Receptor: Free Nerve Ending (A delta)

Answer 15

Pain/Temp receptor sensitive to tissue damage/temp/coarse touch

Question 16

Receptor: Free Nerve Ending (C)

Answer 16

Pain/Temp receptor sensitive to tissue damage/temp/itch/tickle

Question 17

Muscle Spindles: Ia afferents

Answer 17

Respond to quick stretch

Question 18

Muscle Spindles: II afferents

Answer 18

Respond to slow stretch