Lecture 3: Skin physiology

Question 1

location/response of free nerve endings?

Answer 1

• epidermis

- temperature, pain, movement and pressure (also itch and movement)

Question 2

location/response of tactile discs?

Answer 2

• deepest layer of epidermis

- texture, shape, edges, fine touch and light pressure

Question 3

location/response of tactile corpuscles?

Answer 3

• papillary layer of dermis

- delicate/discriminative touch, light pressure, low frequency vibration

Question 4

location/response of lamellar corpuscles?

Answer 4

• deep in dermis and hypodermis

- deep pressure and vibration

Question 5

location/response of bulbous corpuscles?

Answer 5

• dermis and subcutaneous tissue

- sustained deep pressure and stretching/distortion of skin