Burns

Question 1

Injures only epidermis, as in sunburn; redness, heat, inflammation. Healing takes days to weeks, no scarring

Answer 1

Superficial, partial-thickness (first degree)

Question 2

Destroys epidermis and some dermis, as in burn from hot liquid. May blister, healing varies with severity and stem cell survival. Stem cells in hair follicles and glands can help regenerate skin. Usually recovers completely, no scarring

Answer 2

Deep, partial thickness (second degree)

Question 3

Destroys epidermis, dermis, and accessory structures. Results from prolonged exposure to heat, flames, hot liquids. Some healing in margins. Often require skin graft/ skin substitutes

Answer 3

Full-thickness (third degree)

Question 4

Originate from the epidermis extend into dermis and hypodermis

Answer 4

Accessory structures

Question 5

Accessory structures of the skin include

Answer 5

Hair follicle
Nails
Skin glands (sweat and sebaceous)

Question 6

Protective covering on ends of fingers and toes

Answer 6

Nails

Question 7

Parts of a nail

Answer 7

Nail plate (body)
Nail bed
Nail matrix
Lunula
Cuticle

Question 8

Visible portion keratinized cells overlies nail bed

Answer 8

Nail plate

Question 9

Surface of skin under nail plate

Answer 9

Nail bed

Question 10

Active growth region not visible at proximal end of nail bed

Answer 10

Nail matrix

Question 11

Pale half moon shaped region that lies over nail matrix nail matrix conceals deeper blood vessels

Answer 11

Lunula

Question 12

Folded at proximal end of nail part of stratum corneum that extends slightly over nail

Answer 12

Cuticle

Question 13

Present on all surfaces of skin except palms, soles, lips, and nipples. Parts of external reproductive organs

Answer 13

Hair

Question 14

Tube like depression of epidermal cells from which hair develops extends into dermis or the subcutaneous layer

Answer 14

Hair follicle

Question 15

Extends from skin surface to dermis or hypodermis

Answer 15

Hair root

Question 16

Deepest part of hair root contains dividing cells of hair matrix

Answer 16

Hair bulb

Question 17

Portion of hair that extends beyond skin surface composed of dead epidermal cells

Answer 17

Hair shaft

Question 18

Contains blood vessels to nourish hair

Answer 18

Hair papilla

Question 19

Attached a hair follicle contracts in response to cold or fear and causes goosebumps

Answer 19

Arrector pili muscle

Question 20

Holocrine glands usually associated with hair follicles produce sebum which consist of fatty material and cellular debris. Seven keeps hair and skin soft and waterproof

Answer 20

Sebaceous glands

Question 21

Widespread in skin. Originate in deeper dermis and hypodermis as all shapes coils

Answer 21

Sweat (sudoriferous) glands

Question 22

Three types of sweat glands

Answer 22

Eccrine (Merocrine) glands
Apocrine sweat glands
Specialized sweat glands

Question 23

Most numerous consist mainly of water some salt and Waze. Response to elevated body temperature. Open to body surface through pores

Answer 23

Eccrine (merocrine) glands

Question 24

Axillary and groin areas open into hair follicles. Secrete by exocytosis. Respond to emotions and pain

Answer 24

Apocrine sweat glands

Question 25

Two types of specialized sweat glands

Answer 25

Ceruminous glands  Mammary glands

Question 26

Earwax (gland)

Answer 26

Ceruminous gland

Question 27

Milk

Answer 27

Mammary gland