5. integumentary system (skin) Flashcards Preview

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Flashcards in 5. integumentary system (skin) Deck (67)
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1

produce sebum and prevent evaporation

oil glands

sebaceous gland

2

sweat glands
evaporate removes large quantities of heat

sudoriferous gland

3

nerve ending allow us to feel touch and pressure

Merkel cell

4

part of hair that is seen outside of the body

hair shaft

5

contains cells that produce hair

hair follicle

6

(90% of epidermis)

make keratin, a tough fibrous protein.
protect skin from damage, microbes, chemicals, provide water resistance

keratinocytes

7

contains DNA

hair root

8

contain mitochondria, endoplasmic reticulum and ribosomes.

composed of dead or degenerating keratinocytes.

secrete a fatty lipid substance used for waterproofing skin

continuously flakes off. may be seen as dandruff.

contain an extra layer in finger tips, soles of feet and palms.

top 3 layers of epidermis

9

stratum spinosum, germinativum (basale) layers of the dermis.

contains stem cells, keratinocytes, melanocytes and Merkel cells

bottom 2 layers of epidermis

10

caused "goose bumps" and makes hair stand up when you are cold

attrector pilli

11

nerves that detect movement of hair

plexus

12

contains cells that make new hair

follicle

13

long part of the hair (that you can see)

shaft

14

newest part of the hair (inside your skin) and contains DNA

root

15

distal part of the nail (the part that you cut)

body

16

cells that produce new nail tissue

matrix

17

thickest part of the nail, so it looks whiter

lunula

18

the newest part of the nail

root

19

low tissue oxygen levels turns skin blue

cyanosis

20

white skin due to lack of blood flow or vasoconstriction of blood vessels

pallor

21

absorbs UV light, offers some protection against radiation damage

melanin

22

dark areas of skin due to excess melanin production

freckles/ age spot

23

genetic defect, missing protein converting enzyme, can't make melanin

albinism

24

excessive growth of melanocytes in epidermis (stratum basale layer)

mole

25

pigment found in red blood cells, turns them red

heme

26

made from vitamin A(stored in fat tissue, turns skin orange)

carotene

27

yellow skin, commonly due to liver disease or by an immature liver (newborns)

jaundice

28

what type connective tissue is subcutaneous layer of skin made of

adipose tissue

29

caused by bacteria

hair follicle and oil gland infection in teens.

acne

30

fungal infection between toes

cancer caused by UV exposure

contagious

athlete's foot