Integumentary System Sensory Receptors

Question 1

sensory receptors

Answer 1

specialised cells which activate sensory neurons when stimulated

Question 2

nociceptors

Answer 2

free nerve endings that detect noxious (tissue-damaging), thermal, mechanical, and chemical stimuli.

Question 3

thermoreceptors

Answer 3

free nerve endings in dermis which detect changes in temperature

Question 4

mechanoreceptors

Answer 4

free nerve endings sensitive to tough and pressure between epidermal cells

Question 5

epidermal mechanoreceptors

Answer 5

• merkel/tactile cells/discs
• free nerve endings

Question 6

merkel cells/tactile discs

Answer 6

extremely sensitive fine touch and pressure receptors in basal layer due to very small receptive field

Question 7

dermal mechanoreceptors

Answer 7

• individual hair
• lamellated corpuscles
• tactile/meissner corpuscles
• ruffini corpuscles
• tickle and itch sensations

Question 8

tactile corpuscles

Answer 8

in papillary layer, sensitive to light touch, light pressure and low frequency vibration

Question 9

individual hair

Answer 9

root nerve plexus of sensory nerves surround base of each hair follicle

Question 10

lamellated corpuscles

Answer 10

deep pressure and pulse vibration receptors in reticular layer

Question 11

ruffini corpuscles

Answer 11

detect tension and distortion in the dermis, reticular layer

Question 12

tickle and itch sensations

Answer 12

caused by free nerve endings