Ch 6- integumentary System

Question 1

What is two or more tissues grouped together to perform specialized functions

Answer 1

An organ

Question 2

What is the largest organ in the body by weight

Answer 2

The skin

Question 3

The skin, hair, fingernails, sensory receptors, and glands make up the what

Answer 3

Integumentary system

Question 4

The skin includes two layers, what are they?

Answer 4

The epidermis and the dermis

Question 5

What is the epidermis

Answer 5

Outer layer of the skin

Question 6

What is the dermis

Answer 6

Inner layer of the skin

Question 7

What anchors the epidermis to the dermis

Answer 7

A basement membrane

Question 8

Beneath the dermis is a loose connective tissue, mainly adipose tissue, that binds the skin to the underlying organs forming what

Answer 8

The subcutaneous layer

Question 9

The epidermis is composed of what

Answer 9

Stratified squamous epithelium, thus lacking blood vessels

Question 10

What is the deepest layer of the epidermis that is close to the dermis and is nourished by blood vessels

Answer 10

Stratum basale

Question 11

Older cells in the epidermis are pushed up from the dermis and harden in a process called what

Answer 11

Keratinization

Question 12

Many layers of tough, tightly packed dead cells accumulate in the outermost epidermis forming what

Answer 12

The stratum corneum

Question 13

Specialized cells in the dermis called ____________ produce ___________ which gives skin its color.

Answer 13

Melanocytes/melanin

Question 14

Differences in skin color result from differences in the amount of what

Answer 14

Melanin being produced

Question 15

What two factors influence skin color

Answer 15

Environmental and physical factors

Question 16

The boundary between the dermis and the epidermis is uneven because epidermal ridges project inward which form what

Answer 16

Dermal papille

Question 17

Where are dermal papille most abundant

Answer 17

Feet and hands

Question 18

What form from dermal papille

Answer 18

Fingerprints

Question 19

The dermis contain what that provide nutrients to all skin cells

Answer 19

Dermal blood vessels

Question 20

Hair follicles are depressing extending from the surface of the skin into the ______ and contain the hair root

Answer 20

Dermis

Question 21

The epidermal cells are its base are nourished from what

Answer 21

Dermal blood vessels

Question 22

What occurs and pushes dead epidermal cells upward from the hair shaft

Answer 22

Keratinization

Question 23

What determine hair color

Answer 23

Genes

Question 24

What glands are associated with hair follicles and secrete an oily mixture of fatty material and cellular debris called ________ through small ducts into the hair follicles

Answer 24

Sebaceous glands // sebum

Question 25

Sebum helps what

Answer 25

Keep hair and skin soft and waterproof

Question 26

Sweat glands are ________ glands that are widespread throughout the skin

Answer 26

Exocrine

Question 27

The most abundant sweat glands are ________ glands that respond to elevated temperature due to environmental heat or physical activity

Answer 27

eccrine

Question 28

Where are eccrine glands common

Answer 28

Forehead, neck, back

Question 29

Sweat is carried away by a tube that opens on the surface of the skin called a ______

Answer 29

Pore

Question 30

Sweat is mostly water but contains small amounts of what

Answer 30

salt, urea, uric acid

Question 31

What glands become active at puberty and are activated by being emotionally upset, frightened, in pain, or during sexual arousal

Answer 31

Apocrine glands

Question 32

How does the skin play a key role in maintaining homeostasis

Answer 32

Regulating body temperature

Question 33

As sweat evaporates, it does what?

Answer 33

Cools the surface of the skin

Question 34

Skin cells help produce what vitamin

Answer 34

Vitamin D