Integumentary System

Question 1

The body needs protection from numerous threats from the environment. These include viral and bacterial invasion and ultraviolet radiation from the sun.

Answer 1

Integumentary system

Question 2

the largest organ of the body

Answer 2

Skin

Question 3

Protect against injury
Protect against the sun UV rays

Answer 3

Skin

Question 4

Prevent entry of harmful microorganisms
Maintain the proper internal body temperature

Answer 4

Skin function

Question 5

Excrete waste materials through perspiration
Function as a sense organ

Answer 5

Skin

Question 6

Three layers of the skin

Answer 6

Epidermis, Dermis, Subcutaneous

Question 7

stratified squamous epithelium

Answer 7

Epidermis

Question 8

corium

Answer 8

Dermis

Question 9

Basal layer includes melanocytes

Answer 9

Epidermis

Question 10

Stratum corneum

Answer 10

Epidermis

Question 11

Nerves, vessels, glands, hair follicles

Answer 11

Dermis

Question 12

Connective tissue (mostly lipocytes)

Answer 12

Subcutaneous

Question 13

Outermost skin layer

Answer 13

Epidermal layer

Question 14

Consists of several sublayers

Answer 14

Epidermal layer

Question 15

Top sublayer is called

Answer 15

stratum corneum

Question 16

Nonvascular

Answer 16

Epidermal layer

Question 17

found in the cells

Answer 17

Keratin

Question 18

bottom sublayer where new cells are produced that push up toward the stratum corneum

Answer 18

Stratum germinativum

Question 19

continuously and rapidly divide through mitosis, pushing older cells outward.

Answer 19

Living cells in the inner epidermis

Question 20

The older cells start producing tough protein fibers known

Answer 20

Keratin

Question 21

washed away or flake off almost every month.

Answer 21

Dead cells on the outer epidermis

Question 22

Outer epidermis also contains cells known as

Answer 22

MELANOCYTES

Question 23

MELANOCYTES that produce the dark brown pigment called

Answer 23

Melanin

Question 24

shield off harmful ultraviolet radiation from the sun.

Answer 24

Melanin

Question 25

Also called the corium

Answer 25

Dermal layer

Question 26

Dermal sub layer 2

Answer 26

papillary layer and the reticular layer

Question 27

Holds many capillaries, lymph cells, nerve endings, sebaceous and sweat glands and hair follicles

Answer 27

Dermal layer

Question 28

This layer contains the sensory receptors and nerve endings that pick out stimuli from the environment.

Answer 28

Dermal layer

Question 29

It also supports hair follicles from which hair grows.

Answer 29

Dermal layer

Question 30

To prevent heat loss, the dermal blood vessels tighten.

Answer 30

Dermal layer

Question 31

Located here are the sweat and sebaceous glands.

Answer 31

Dermal layer

Question 32

secrete perspiration.

Answer 32

SWEAT GLANDS

Question 33

secrete oil.

Answer 33

SEBACEOUS GLANDS

Question 34

These glands have ducts that extend to the epidermis, with openings on the skin surface.

Answer 34

SEBACEOUS GLANDS , SWEAT GLANDS

Question 35

Also called the hypodermis

Answer 35

Subcutaneous Layer

Question 36

Found between the dermal layer and the inner organs

Answer 36

Subcutaneous Layer

Question 37

Consists of adipose or fatty tissue and some fibrous tissue

Answer 37

Subcutaneous Layer

Question 38

Fatty tissue protects inner organs and maintains body temperature

Answer 38

Subcutaneous Layer

Question 39

Blood vessels and nerves are present

Answer 39

Subcutaneous Layer

Question 40

grows out of the epidermis to cover parts of the body.

Answer 40

Hair

Question 41

what we see

Answer 41

Shaft

Question 42

lies below the surface of the skin.

Answer 42

Root

Question 43

Hair color is determined by the presence of

Answer 43

Melanin

Question 44

more than just a “crowning glory’.

Answer 44

Hair

Question 45

Its primary function is to add more protection to the skin from ultraviolet radiation.

Answer 45

Hair

Question 46

those that surround the eyes form a shield against dirt and other particles

Answer 46

The tiny hairs that line the nostrils and the external ears

Question 47

are plates made of hard keratin that cover the dorsal surface of the fingers and toes.

Answer 47

Nails

Question 48

is an area where keratin and other cells have mixed with air.

Answer 48

a lunula or whitish half-moon

Question 49

narrow band of epidermis that surrounds the base or bottom of nails

Answer 49

Cuticle