Chapter 5; Bio 210 (Integumentary System)

Question 1

Direction of Cell Movement in the Integumentary System

Answer 1

Basale (deep- 
Spinosum
Granulosum
Lucidum
Corneum (superficial)

Question 2

Cutaneous Membrane

Answer 2

Epidermis and Dermis

Question 3

Integumentary System compose of

Answer 3

Integument
Hair
Nails
Exocrine Glands (oil sweat)

Question 4

Epidermis

Answer 4

stratified squamous

• avascular
• innervated

Question 5

Thick Skin

Answer 5

palms and soles of feet (5 Layers) has LUCIDUM

Question 6

Thin Skin

Answer 6

hair folecule typically evident (4 Layers) no lucidum

Question 7

Melanocyte

Answer 7

determines hair color (located in bulb of follicle)

Question 8

Arrector Pilli

Answer 8

smooth muscle in each hair follicile

Question 9

Sebaceous Glands

Answer 9

produce sebum (oil)

Question 10

Eccrine (sweat) Glands

Answer 10

coiled tubular glands

Question 11

Carotene

Answer 11

yellow pigment that can accumulate in the stratus corneum

Question 12

Cleavage Lines

Answer 12

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

Question 13

Jaundice

Answer 13

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

Question 14

Pituitary Malfunction

Answer 14

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

Question 15

Layers of Skin:

Answer 15

Stratum Corneum
Stratum Lucidum
Stratum Granulosum
Stratum Spinosum
Stratum Basale

Question 16

Melanin

Answer 16

responsible for skin color

Question 17

Stratum Corneum

Answer 17

most superficial layer of the epidermis (protein envelope and protection by keratin)

• dead squamous cells
• cornified cells (dead cells)

Question 18

Stratum Lucidum

Answer 18

3 to 5 layers thick of dead cells

-appears transparent (thick skin)

Question 19

Stratum Granulosum

Answer 19

2 to 5 layers of flat diamons shaped cells that

-release lipids

Question 20

Stratum Spinosum

Answer 20

8 to 10 layers of many-sided cells

-produces keratin fibers

Question 21

Stratum Basale

Answer 21

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

Question 22

Dermal Papilla

Answer 22

little humps that shape the phalange print

Question 23

Melanin

Answer 23

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

Question 24

Calcitirol

Answer 24

essential for normal absorption of Ca and P

Question 25

Rickets

Answer 25

form in bones from insufficient amount of vitamin D

Question 26

Dermis: Paillary layer

Answer 26

(20% of dermis) loose and areolar tissue

• contains small capillaries
• contains dermal papillae

Question 27

Dermis: Reticular Layer

Answer 27

(80% of dermis) dense irregular connective tissue

-larger vessels

Question 28

Sensory structure in epidermis

Answer 28

Merkel cells

Question 29

Sensory structures in dermis

Answer 29

Meissner and Pacinian corpuscle

Question 30

Pesudorifris glands

Answer 30

sweat glands (NOT sebum, not oil)

Question 31

Holocrine

Answer 31

destorys and lysis

Question 32

Merocrine

Answer 32

exocytosis

Question 33

Apocrine

Answer 33

pinching off

Question 34

Merocrine sweat glands

Answer 34

most of the body

-palms of the hands, coiled tubular

Question 35

Apocrine sweat glands

Answer 35

armpits and nipples that break down and cause odors

Question 36

Thermoregulation

Answer 36

helps maintain homeostasis that works with cardiovascular system

Question 37

Fibrosis

Answer 37

formation of scar tissue

Question 38

Ceruminous Glands

Answer 38

produces earwax

modified eccrine gland