Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physiology and Histology of the Skin > Layers of skin > Flashcards

Layers of skin Flashcards

1
Q

Name the three layers/components of skin

A

hypodermis (subcutaneous), dermis, epidermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is another name for the subcutaneous layer of skin?

A

hypodermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The subcutaneous layer is skin is made from a loose connective tissue called…

A

adipose tissue OR subcutis tissue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The subcutaneous layer of skin is ___% fat

A

80%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Name some of the components of the hypodermis

A

blood vessels, nerves, fibers, adipose cells, fibroblasts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the layer of skin that sits between the hypodermis and the epidermis?

A

dermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The dermis is ___ times thicker than the epidermis

A

25

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Name the two layers within the dermis

A

reticular layer and papillary layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

This is the denser and deeper layer of the dermis, comprised mostly of collagen and elastin

A

reticular layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

This upper layer of the dermis that connects the dermis to the epidermis

A

papillary layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The name for the membranes of ridges and grooves that attach to the epidermis

A

dermal papillae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cone-shaped structures at the bottom of a hair follicle

A

hair papillae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The name for a protein substance of complex fibers that give skin its strength and is necessary for wound healing

A

collagen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Produced by fibroblasts, collagen makes up ___% of the dermis

A

70%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

This is the fibrous protein that forms elastic tissue and gives skin its elasticity

A

elastin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Derived from the Greek word “kolla” for glue and “gennan” for to produce — what is this word?

A

collagen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the most abundant protein in the body?

A

collagen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the name for the large protein molecules and water-binding substances found between the fibers of the dermis?

A

Glycosaminoglucans (GAGs)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Within the dermis, what kind of vessels remove waste products, bacteria, and excess fluid?

A

lymph vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

A term that refers to the layers of connective collagen tissue with pockets and holes that connect the dermis to the epidermis

A

dermal/epidermal junction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is another name for the dermis?

A

derma/corium/true skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

The name for a hydrating fluid found in the skin

A

hyaluronic acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the name for the layers of connective collagen tissue where collagen fibrils meets keratin filaments?

A

Dermal/epidermal junction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are the five strata of the epidermis?

A

Stratum corneum
Stratum lucidum
Stratum granulosum
Stratum spinosum
Stratum germinativum

(Come Let’s Get Skin Glowing)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the outer-most stratum of the epidermis?

A

Stratum corneum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

A fibrous protein that provides resilience and protection, found in all layers of the epidermis

A

Keratin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

A fibrous protein found in hair, nails, and skin

A

Keratin

28
Q

The stratum that makes skin, i.e. “the germination or growth layer”

A

Stratum germinativum

29
Q

The basal cell layer is also known as the stratum ___________

A

Stratum germinativum

30
Q

Melanocytes live in this stratum of the epidermis

A

Stratum germinativum

31
Q

This type of cell comprises 95% if the epidermis

A

Keratinocytes

32
Q

This type of cell is composed of keratin

A

Keratinocytes

33
Q

What is the largest layer of the epidermis?

A

Stratum spinosum

34
Q

Found in the stratum spinosum, these cells protect the body from infections by identifying foreign material

A

Langerhans immune cells

35
Q

The intercellular structures that assist in strengthening and holding cells together in the stratum spinosum

A

Desmosomes

36
Q

Natural moisturizing substances such as triglycerides, ceramides, waxes, and fatty acids are made in this stratum of the epidermis

A

Stratum granulosum

37
Q

Which layer of the epidermis gives us our finger prints and foot prints?

A

Stratum lucidum

38
Q

This layer of the epidermis is thickest on the palms of our hands and soles of our feet

A

Stratum lucidum

39
Q

The stratum of thin, clear, dead cells under the stratum coreum

A

Stratum lucidum

40
Q

Also known as the “horny layer” of the epidermis

A

Stratum corneum

41
Q

This is the layer of the epidermis that estheticians work with

A

Stratum corneum

42
Q

Keratinocytes on the surface of the stratum corneum harden into this type of waterproof protective cell

A

Corneocytes

43
Q

What is the name for the process in which keratinocytes are shed from the skin?

A

Desquamation

44
Q

The average adult has a cell over rate of every ____ days

A

28 days

44
Q

What is another common name for desquamation?

A

cell turnover

45
Q

This layer of the epidermis is also known as the “granular layer” and is composed of cells that resemble granules and are filled with keratin

A

Stratum granulosum

46
Q

This enzyme stimulates melanocytes to produce melanin

A

tyrosinase

47
Q

This is the name for the thin polar membrane made of two lipid molecules that surround stratum corneum cells

A

bilayers

48
Q

What is the range of thickness of the stratum corneum?

A

0.01-0.04 mm

49
Q

Keratinocytes on the surface of the skin are also called ______________

A

squamous keratinized cells

50
Q

Name the two types of melanin the body produces

A

pheomelanin and eumelanin

51
Q

Of the two types of melanin, which one is dark brown to black?

A

eumelanin

52
Q

Of the two types of melanin, which one is red to yellow in color?

A

pheomelanin

53
Q

The name for the arms, or cellular projections, of melanocytes

A

dendrites

54
Q

Cell mitosis happens in this layer of the epidermis

A

Stratum germinativum

54
Q

In what layer of the epidermis does skin begin to die?

A

Stratum granulosum

54
Q

When daughter cells are not able to divide anymore and program themselves to end up as one specific type of cell, that is known as…

A

terminal differentiation

55
Q

Cells that contain lipids to maintain the barrier function, found in the stratum spinosum

A

Lamellar granules

56
Q

This layer of the epidermis is thin, waterproof, and permeable

A

stratum corneum

57
Q

What is the name for the natural moisturizing substances in the stratum granulosum that hydrate the lipid layer surrounding cells and prevent water loss?

A

natural moisturizing factors

58
Q

The stratum corneum has ___-____ layers of cells

A

15-20

59
Q

Products that suppress melanin production are referred to as…

A

brightening agents (and also tyrosinase inhibitors)

60
Q

Cells and oil combine to form a protective barrier on this stratum of the epidermis

A

stratum corneum

61
Q

Cells continue to divide and enzymes create lipids and proteins in this stratum

A

Stratum spinosum

62
Q

Stem cells undergo mitosis in this stratum

A

stratum germinativum

63
Q

These remove waste products, bacteria, and excess fluid from skin

A

lymph vessels

Physiology and Histology of the Skin (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions