Integumentary System

Question 1

Name of the two layers of the integumentary system

Answer 1

Epidermis(outer); dermis (inner)

Question 2

Epidermis: cell type and location

Answer 2

Stratified squamous and outer layer(basement membrane)

Question 3

Dermis: location and what is it made of

Answer 3

Inner layer- connective tissue(collagen and elastic fibers)

Question 4

Subcutaneous layer

Answer 4

Insulating layer; areolar and adipose tissue; contain blood vessels(supply skin nutrients)not considered skin

Question 5

Keratinization

Answer 5

Hardening, dehydration of cells( karetin as they migrate outward)

Question 6

Keratin

Answer 6

Waterproof protein

Question 7

5 layers of epidermis and the acronym

Answer 7

Stratum corneum, lucidum, granolsum, spinosum, and basale; Come Lets Get Some Bread

Question 8

Stratum cordeum

Answer 8

Outermost-keratanized cells

Question 9

Stratum lucidum

Answer 9

Only in thick skin( palms and soles)

Question 10

Startum basale

Answer 10

Deepest mitotic layer

Question 11

Melanocytes

Answer 11

Produce melanin(dark pigment); absorb UV light

Question 12

Factors that affect skin color

Answer 12

Hereditary, environmental, and physiological

Question 13

Hereditary factors

Answer 13

All people have same # of melanocytes; genetics controls the produce of melanin; albinos lack melanin(mutation)

Question 14

Environmental factors(outside)

Answer 14

Sunlight, UV light, and X-Rays

Question 15

Physiological factors(inside)

Answer 15

Oxygenated blood; vasodilation/vasocontriction(blue); accumulation of carotene(orange); Jaundice(yellow)

Question 16

Dermis function

Answer 16

Papillae; fingerprints; bind epidermis to tissue

Ex. Nerve, blood vessels, Hair, glands, receptors

Question 17

2 types of dermis layer

Answer 17

Papillary layer & Reticular layer

Question 18

Papillar layer

Answer 18

Superficial layer; areolar

Question 19

Reticular layer

Answer 19

Dense irregular, and thicker

Question 20

Accessory structure of skin

Answer 20

Hair folicles, nails, and skin glands(sweat and sebaceous)

Question 21

Nails

Answer 21

Protective covering

Question 22

Nails

Answer 22

Protective covering

Question 23

3 parts of a nail

Answer 23

Nail plate, nail bed, and lunula

Question 24

Nail plate

Answer 24

Overlies nail bed

Question 25

Nail bed

Answer 25

Surface of skin

Question 26

Lunula

Answer 26

Most active growing region

Question 27

Hair folicles

Answer 27

Tube like depression where hair develops

Question 28

3 parts of hair

Answer 28

Hair bolb(dividing cells), hair roots, and hair shaft

Question 29

Hair papilla

Answer 29

Blood vessels, nourish hair

Question 30

Most common baldness and cause of disease

Answer 30

Androgenic alopecia; lower testosterone(male) lower estrogen(female)

Question 31

Alopecia areata

Answer 31

Autoimmune hair loss(hairs kills itself)

Question 32

Subaceous gland

Answer 32

Oil; produce sebum

Question 33

Subaceous gland

Answer 33

Oil; produce sebum

Question 34

Sebum

Answer 34

Keeps hair and skin soft, excess sebum results in acne

Question 35

Acne vulgaris

Answer 35

Disorder of subaceous glands; common puberty(subaceous glands become clogged); treated with salicylic acid and benzol peroxide

Question 36

Sweat glands

Answer 36

Wide spread; eccrine and apocrine gland

Question 37

Eccrine(merocrine) glands

Answer 37

Most common; respond to elevated temperatures

Question 38

Apocrine sweat gland

Answer 38

Axillary and groin; respond to emotion and pain