Chapter 5; Bio 210 (Integumentary System) Flashcards Preview

Biology 210 > Chapter 5; Bio 210 (Integumentary System) > Flashcards

Flashcards in Chapter 5; Bio 210 (Integumentary System) Deck (38):
1

Direction of Cell Movement in the Integumentary System

Basale (deep-
Spinosum
Granulosum
Lucidum
Corneum (superficial)

2

Cutaneous Membrane

Epidermis and Dermis

3

Integumentary System compose of

Integument
Hair
Nails
Exocrine Glands (oil sweat)

4

Epidermis

stratified squamous
-avascular
-innervated

5

Thick Skin

palms and soles of feet (5 Layers) has LUCIDUM

6

Thin Skin

hair folecule typically evident (4 Layers) no lucidum

7

Melanocyte

determines hair color (located in bulb of follicle)

8

Arrector Pilli

smooth muscle in each hair follicile

9

Sebaceous Glands

produce sebum (oil)

10

Eccrine (sweat) Glands

coiled tubular glands

11

Carotene

yellow pigment that can accumulate in the stratus corneum

12

Cleavage Lines

lines in the skin that go different directions (dense irregular tissue)

13

Jaundice

malfunction of liver and bile can't be excreted, may accumulate in skin.

14

Pituitary Malfunction

tumors cause secretions of MSH (Melanocyte stimulating hormone) darkens the skin.

15

Layers of Skin:

Stratum Corneum
Stratum Lucidum
Stratum Granulosum
Stratum Spinosum
Stratum Basale

16

Melanin

responsible for skin color

17

Stratum Corneum

most superficial layer of the epidermis (protein envelope and protection by keratin)
-dead squamous cells
-cornified cells (dead cells)

18

Stratum Lucidum

3 to 5 layers thick of dead cells
-appears transparent (thick skin)

19

Stratum Granulosum

2 to 5 layers of flat diamons shaped cells that
-release lipids

20

Stratum Spinosum

8 to 10 layers of many-sided cells
-produces keratin fibers

21

Stratum Basale

single layer of cuboidal or columnar cells
-basement membrane that attaches to the dermis
-produce melanocytes
protect against UV light

22

Dermal Papilla

little humps that shape the phalange print

23

Melanin

determines skin color by the rate of production of melaninocytes NOT how many.
*As a species we have about the same number of melanocytes*

24

Calcitirol

essential for normal absorption of Ca and P

25

Rickets

form in bones from insufficient amount of vitamin D

26

Dermis: Paillary layer

(20% of dermis) loose and areolar tissue
-contains small capillaries
-contains dermal papillae

27

Dermis: Reticular Layer

(80% of dermis) dense irregular connective tissue
-larger vessels

28

Sensory structure in epidermis

Merkel cells

29

Sensory structures in dermis

Meissner and Pacinian corpuscle

30

Pesudorifris glands

sweat glands (NOT sebum, not oil)

31

Holocrine

destorys and lysis

32

Merocrine

exocytosis

33

Apocrine

pinching off

34

Merocrine sweat glands

most of the body
-palms of the hands, coiled tubular

35

Apocrine sweat glands

armpits and nipples that break down and cause odors

36

Thermoregulation

helps maintain homeostasis that works with cardiovascular system

37

Fibrosis

formation of scar tissue

38

Ceruminous Glands

produces earwax
(modified eccrine gland)