Skin/Integumentary System

Question 1

Multiple sensory modalities, fine touch, heat, cold and pain

Answer 1

Free nerve endings

Question 2

Skin receptors that allow for: Cutaneous sensation

Answer 2

Merkel corpuscles

Question 3

Deep pressure skin receptors

Answer 3

Pacinian Corpuscles

Question 4

Cold skin receptors

Answer 4

Kraus end bulbs

Question 5

Touch
Lips, palmar & volar surfaces receptors
-Appears as twisted skein of wool

Answer 5

Meissner corpuscles

Question 6

Stretch and torque of collagen fibers receptors

Answer 6

Ruffini corpuscles

Question 7

What is the largest skin cell population?

Answer 7

Keratinocytes

Question 8

Pigment producing cells of the epidermis

Answer 8

Melanocytes

Question 9

Mechanoreceptors of the skin

Answer 9

Merkel Cells: also associated with sensory nerve endings

Question 10

Antigen presenting cells (APC’s)

Answer 10

Langerhan cells: plays a role in immunological function of skin

Question 11

Which type of skin cell contributes to the formation of the epidermal water barrier?

Answer 11

Keratinocytes

Question 12

Function of hemidesmosomes

Answer 12

Links keratinocytes to Basement membrane

Question 13

Function of Desmosomes

Answer 13

Links keratinocytes to each other and cells of spinosum layer

Question 14

Large-lumen tubular glands associated with hair follicles

Answer 14

Apocrine glands

Question 15

Locations of apocrine sweat glands

Answer 15

Axilla, areola, nipple of the mammary gland, skin around the anus, and the external genitalia

Question 16

Locations of eccrine sweat glands

Answer 16

Distributed over the entire body surface except for the lips and part of the external genitalia

Question 17

Long phase of active growth in hair

Answer 17

anagen

Question 18

Short phase of involution in hair growth

Answer 18

Catagen

Question 19

Short inactive phase of hair growth

Answer 19

Telogen

Question 20

Hyperkeratosis

Answer 20

Thickening of the stratum corneum

Question 21

Parakeratosis

Answer 21

Retention of nuclei in the keratinocytes of the stratum corneum

Question 22

Acanthosis

Answer 22

Increase in thickness of the stratum spinosum

Question 23

Acantholysis

Answer 23

Broken bonds between cells of the epidermis leading to separation of these cells from each other.