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Anatomy & Physiology > Unit 2 Intgumentary System (Skin) > Flashcards

Unit 2 Intgumentary System (Skin) Flashcards

1
Q

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

A

True

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2
Q

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

A

True

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3
Q

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

A

True

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4
Q

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

A

Organ

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5
Q

What are two main tissue types of the skin?

A
  1. Epithelial tissue
  2. Connective tissue
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6
Q

What is the largest organ in the body by weight?

A

Skin

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7
Q

What are the accessory structures associated with the skin?

A
  1. Hair
  2. Nails
  3. Muscles
  4. Glands
  5. Sensory receptors
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8
Q

What is the function of the integumentary system?

A

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

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9
Q

What are the two distinct layers of the skin?

A
  1. Epidermis
  2. Dermis
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10
Q

Which skin layer is composed of stratified squamous epithelium?

A

Epidermis

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11
Q

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

A

Dermis

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12
Q

Which skin layer is thicker, epidermis or dermis?

A

Dermis

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13
Q

What is the outermost layer of skin called?

A

Epidermis

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14
Q

What skin layer is below the dermis?

A

Hypodermis

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15
Q

What is another name for the hypodermis?

A

Subcutaneous layer

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16
Q

Is the hypodermis a true layer of skin?

A

No

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17
Q

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

A

Hypodermis

18
Q

In which skin layer are areolar and adipose tissue found?

A

Hypodermis

19
Q

What is the function of adipose tissue?

A

Insulates the body and helps conserve energy

20
Q

What is the function of the epidermis?

A

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
21
Q

What is the deepest layer of epidermal cells called?

A

Stratum basale

22
Q

How is the stratum basale nourished?

A

By dermal blood vessels

23
Q

What are older skin cells called?

A

Keratinocytes

24
Q

In which layer do tightly packed dead skin cells accumulate?

A

Stratum corneum

25
Q

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

A

False

26
Q

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

A
  1. Stratum corneum
  2. Stratum granulosum
  3. Stratum spinosum
  4. Stratum basale
27
Q

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

A

Stratum lucidum

28
Q

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

A

Dermal papillae

29
Q

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

A

True

30
Q

Where are dermal papillae most abundant?

A

Hands and feet

31
Q

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

A

Dermal papillae

32
Q

What are 4 functions of the dermis?

A
  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
33
Q

What skin layer contains nerve cell processes?

A

Dermis

34
Q

Which accessory skin structures are contained in the dermis?

A
  1. Hair follicles
  2. Sebaceous(oil producing) glands
  3. Sweat glands
35
Q

What gives skin its color?

A

Melanin

36
Q

In which layer is skin pigmentation produced?

A

Epidermis

37
Q

What specialed cells produce melanin?

A

Melanocytes

38
Q

Which layer of the epidermis are milanocytes found in?

A

Stratum basale (the deepest layer)

39
Q

Eumelanin causes what skin color?

A

Brownish-black

40
Q

Pheomelanin causes what skin color?

A

Reddish-yellow (such as the lips)

41
Q

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

A

True

42
Q

What causes different skin colors?

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

Anatomy & Physiology (10 decks)

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