Unit 2 Intgumentary System (Skin)

Question 1

True or false - the integumentary system is large and complex.

Answer 1

True

Question 2

True or false - The integumentary system affects all other systems of the body.

Answer 2

True

Question 3

True or false - The integumentary system affects all other systems of the body.

Answer 3

True

Question 4

An ___________ is two or more tissue types that are structurally connected and perform shared, specialized functuons.

Answer 4

Organ

Question 5

What are two main tissue types of the skin?

Answer 5

1. Epithelial tissue
2. Connective tissue

Question 6

What is the largest organ in the body by weight?

Answer 6

Skin

Question 7

What are the accessory structures associated with the skin?

Answer 7

1. Hair
2. Nails
3. Muscles
4. Glands
5. Sensory receptors

Question 8

What is the function of the integumentary system?

Answer 8

The skin and accessory structures work together to form a barrier between ourselves and the outside world.

Question 9

What are the two distinct layers of the skin?

Answer 9

1. Epidermis
2. Dermis

Question 10

Which skin layer is composed of stratified squamous epithelium?

Answer 10

Epidermis

Question 11

Which skin layer is composed of connective tissue, collagen and elastic fibers?

Answer 11

Dermis

Question 12

Which skin layer is thicker, epidermis or dermis?

Answer 12

Dermis

Question 13

What is the outermost layer of skin called?

Answer 13

Epidermis

Question 14

What skin layer is below the dermis?

Answer 14

Hypodermis

Question 15

What is another name for the hypodermis?

Answer 15

Subcutaneous layer

Question 16

Is the hypodermis a true layer of skin?

Answer 16

No

Question 17

What skin “layer” contains major blood vessels that supply skin and adipose tissue?

Answer 17

Hypodermis

Question 18

In which skin layer are areolar and adipose tissue found?

Answer 18

Hypodermis

Question 19

What is the function of adipose tissue?

Answer 19

Insulates the body and helps conserve energy

Question 20

What is the function of the epidermis?

Answer 20

Shields the moist underlying tissues against

1. Excess water loss
2. Mechanical injury
3. Effects of harmful chemicals
4. Keeps out disease causing micro-organisms

Question 21

What is the deepest layer of epidermal cells called?

Answer 21

Stratum basale

Question 22

How is the stratum basale nourished?

Answer 22

By dermal blood vessels

Question 23

What are older skin cells called?

Answer 23

Keratinocytes

Question 24

In which layer do tightly packed dead skin cells accumulate?

Answer 24

Stratum corneum

Question 25

True or false - the epidermis is the same thickness in all areas of the body.

Answer 25

False

Question 26

Which layers of the epidermis are found in all areas of the skin?

Answer 26

1. Stratum corneum 2. Stratum granulosum 3. Stratum spinosum 4. Stratum basale

Question 27

Which layer of the epidermis is found only in the thickened, hairless skin of the palms and soles?

Answer 27

Stratum lucidum

Question 28

Conical projections of the dermis that extend into the spaces berween the epidermal ridges are called what..

Answer 28

Dermal papillae

Question 29

True or false - dermal papillae are found all over the body.

Answer 29

True

Question 30

Where are dermal papillae most abundant?

Answer 30

Hands and feet

Question 31

What part of the skin is responsible for leaving a fingerprint?

Answer 31

Dermal papillae

Question 32

What are 4 functions of the dermis?

Answer 32

1. Binds the epidermis to the underlying tissue 2. Gives skin toughness and elasticity 3. Dermal blood vessels supply nutrients to all skin cells 4. Dermal blood vessels help regulate body temperature

Question 33

What skin layer contains nerve cell processes?

Answer 33

Dermis

Question 34

Which accessory skin structures are contained in the dermis?

Answer 34

1. Hair follicles 2. Sebaceous(oil producing) glands 3. Sweat glands

Question 35

What gives skin its color?

Answer 35

Melanin

Question 36

In which layer is skin pigmentation produced?

Answer 36

Epidermis

Question 37

What specialed cells produce melanin?

Answer 37

Melanocytes

Question 38

Which layer of the epidermis are milanocytes found in?

Answer 38

Stratum basale (the deepest layer)

Question 39

Eumelanin causes what skin color?

Answer 39

Brownish-black

Question 40

Pheomelanin causes what skin color?

Answer 40

Reddish-yellow (such as the lips)

Question 41

True or false - all people have the same number of melanocytes in their skin.

Answer 41

True

Question 42

What causes different skin colors?

Answer 42

1. The amount of melanin the melanocytes produce 2. The distribution and size of the pigment granules