Chapter 5 Powepoints cont

Question 1

Subcutaneous tissue

Answer 1

Deep to skin
Consists of loose connective tissue with collagen and elastic fibers
Types of cells
Fibroblasts
Adipose cells
Macrophages

Question 2

what is the subcutaneous tissue also called?

Answer 2

Hypodermis

Superficial fascia

Question 3

what are the functions of subcutaneous tissue?

Answer 3

Contains about one-half of body’s adipose tissue. Functions as
Energy source
Insulation
Padding

Question 4

Cleavage (tension) lines

Answer 4

elastic and collagen fibers oriented in some directions more than in others

Question 5

why are cleavage (tension) lines important?

Answer 5

Important in surgery
If incision parallel to lines, there is less gapping
faster healing, less scar tissue

Question 6

striae (stretch marks) occur

Answer 6

(stretch marks) occur

If skin is o v e r s t r e t c h e d

Question 7

what are the 3 concentric layers of hair?

Answer 7

Medulla: Central axis
Cortex: surrounds medulla and forms bulk of hair
Cuticle: Forms hair surface

Question 8

how is the hair divided

Answer 8

shaft, bulb, root

Question 9

root and shaft are composed of

Answer 9

columns of dead keratinized epithelial cells in three layers

Question 10

hair follicle

Answer 10

tubelike invagination of the epidermis that extends to the dermis

Question 11

hair matrix

Answer 11

produces hair and the internal epithelial root sheath

Question 12

growth stage of hair

Answer 12

new matrix calls are produces, differentiate, become keratinized, and die.
hair grows longer as cells are added at the base of the hair root

Question 13

arrector pili

Answer 13

smooth mucle cells

Question 14

sabaceous glands produce

Answer 14

sebum, an oily white substance that is rich in lipids

Question 15

eecrine sweat glands

Answer 15

most common type of sweat glands
merocrine
tubular, coiled, simple glands that open to the surface 
palms, soles
regulate temp

Question 16

apocrine sweat glands

Answer 16

simple, coiled, tubular glands that usually open into hair follicles superficial to the opening of the sabaceous glands
found in axillae or genetalia
active during puberty
sexual maturity for animals

Question 17

ceruminous glands

Answer 17

located in the ear canal

Question 18

cerumen

Answer 18

earwax, composed of the combines secretions og the ceruminous glands and sabaceous glands

Question 19

nail

Answer 19

is a plate with layers of stratum corneum cells that contain hard keratin

Question 20

nail root and body

Answer 20

• root is covered by skin and extends matrix

- body is visible

Question 21

Eponychium

Answer 21

cuticle- is corneum superficial to nail body, hyponychium is corneum beneath the free edge

Question 22

hyponichyium

Answer 22

is corneum beneath the free edge

Question 23

Matrix and nail bed

Answer 23

cells that give rise to the nail

composed of epithelial tissue, with a stratum basale

Question 24

lanula

Answer 24

blood vessels dont show trough the thicker nail matrix

Question 25

how fast do nails grow

Answer 25

Grow continuously unlike hair
Fingernails grow 0.5-1.2 mm/day;
faster than toenails

Question 26

lipids in the intergumarty system

Answer 26

have to be applied directly bc lipids dont make it through epithelial tissure

Question 27

integumarty system temp regulator

Answer 27

sweat to vevapotate to cool body off

arrector pilli for shivering when cold

Question 28

first degree burn

second degree burn

Answer 28

only the epidermis, redness pain

epidermis and dermis- blisters 2 weeks to heal

Question 29

third degree burn

Answer 29

usually painless bc sensory receptors are destoryed
completely destroy the dermis and epidermis
appear white, tan, brown, black or deep cheery red