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Laser 106 > Physiology And Histology Of The Skin > Flashcards

Physiology And Histology Of The Skin Flashcards

1
Q

The _______ is the largest organ in the body.

A

Skin

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2
Q

Physiology includes the functions, _________ and anatomy of the skin.

A

Layers

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3
Q

Histology is the study of the structure and function of the ____ ______.

A

Skin tissue

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4
Q

Skin of an adult weighs about ___ pounds.

A

7

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5
Q

The average adult has about _____ square feet of skin.

A

22

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6
Q

The body maintains ___________________ through evaporation, perspiration to keep us from overheating.

A

Thermoregulation

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7
Q

_____________ of sweat glands release heat from the body through perspiration to keep us from heating.

A

Millions

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8
Q

____ layers help to insulate the body.

A

Fat

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9
Q

Hair follicles also help regulate ______ ____________. The arrest or puli muscle cause the hair to stand up straight and cause goose bumps.

A

Body temperature

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10
Q

The ________________ ____________, also know as sweat glands, excrete perspiration and detoxify the the body by excreting excess water, salt and unwanted chemicals through the pores.

A

Sudoriferous glands

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11
Q

The ____ ________ is a protective barrier made up of sebum, lipids, sweat and water. These components form a hydrolipidic film to protect the skin from drying out and from exposure to external factors.

A

Acid mantle

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12
Q

The average pH of the acid mantle is .

A

5.5

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13
Q

The ___________ _____________ protects skin from irritation and transepidermal water loss.

A

Barrier function

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14
Q

Melanin also provides protection from the ____ _______ of the sun.

A

UV rays

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15
Q

__________ is a pigment in the eyes, hair and skin.

A

Melanin

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16
Q

Absorption of ingredients, water and oxygen is necessary for skins house. ___________ __ is also synthesized and produced in the skin upon exposure to the sun.

A

Vitamin D

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17
Q

Sensory nerve endings in the ________ respond to touch, pain, cold, heat and pressures.

A

Dermis

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18
Q

___________ ___________ fibers are most abundant in the fingertips and thus are designed to be one of the most sensitive parts of the body.

A

Sebaceous glands

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19
Q

The ____________ is the outermost layer of the skin.

A

Epidermis

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20
Q

The epidermis is comprised of ____________________, cells that produce keratin, approximately 95% of the epidermis is __________________.

A

Keratinocytes

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21
Q

A fiberous protein that provides resiliency and protection to the skin.

A

Keratin

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22
Q

Keratin is found in all layers of the ______________.

A

Epidermis

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23
Q

Hard keratin is the ___________ found in hair and nails.

A

Protein

24
Q

The epidermis is only ___._ mm to ___._mm thick.

A

0.04
1.5

25
Q

The epidermis is comprised of five strata or _________.

A

Layers

26
Q

As estheticians, we are only concerned with the_____________ and not allowed to work in the dermis.

A

Epidermis

27
Q

Five layers of the epidermis:

A

Stratum Corneum
Stratum Lucidum
Stratum Granulosum
Stratum Spinosum
Stratum Germinativum/Basale

28
Q

Also known as the basal layer; this is the layer where everything germinates.

A

Stratum Germinativum

29
Q

Stratum Germinativum is an active layer where_____ ______ undergo continuous cell division (mitosis) to replenish the regular loss of skin cells.

A

Stem cells

30
Q

Stratum Germinativum in only ___ layer of cells thick.

A

1

31
Q

Melanocytes are cells that produce_________ layers.

A

Pigment

32
Q

___________ is the pigment.

A

Melanin

33
Q

Melansomes are _____________ carrying granules.

A

Pigment

34
Q

Melansomes are pigment carrying ____________.

A

Granules

35
Q

Also known as the spiny layer.

A

Stratum Spinosum

36
Q

Cells continue to divide and change shape in this layer.

A

Stratum Spinosum

37
Q

Keratin filaments that form bonds between cells form is this layer.

A

Stratum Spinosum

38
Q

Stratum Spinosum contains ________________ cells which are part of the immune system.

A

Langerhans

39
Q

Also known as the granular layer.

A

Stratum Granulosum

40
Q

This this layer is composed of cells that resemble granules and are filled with keratin.

A

Stratum Granulosum

41
Q

The production of keratin and intercellular lipids take place here.

A

Stratum Granulosum

42
Q

A thin clear layer of dead skin cells under the stratum corneum.

A

Stratum Lucidum

43
Q

It is a translucent layer that allows light to pass through.

A

Stratum Lucidum

44
Q

Also know as the horny layer

A

Stratum corneum

45
Q

This is the top outermost layer of the epidermis.

A

Stratum Corneum

46
Q

Estheticians are primarily concerned with this layer.

A

Stratum Corneum

47
Q

This layer is very thin yet waterproof, permeable, regenerative and detoxifies the body.

A

Stratum Corneum

48
Q

Keratinocytes have hardened into _______________.

A

Corneocytes

49
Q

Stratum Corneum; These cells have dried out and lack ____________.

A

Nuclei

50
Q

Also known as the derma, corium, cutis or true skin.

A

The Dermis

51
Q

It is the supportive layer of connective tissues below the epidermis.

A

The dermis

52
Q

The _________ is about 25 times thicker than the epidermis and consists of two layers: papillary and reticular.

A

Dermis

53
Q

Synthesizes the extracellular matrix and collagen, the structural framework (stroma) for animal tissues and plays critical role in wound healing.

A

Fibroblast

54
Q

Fibroblast are the most common cells in

A

Connective tissue

55
Q

Is a protein substance of complex fibers that gives skin its strength and is necessary for wound healing.

A

Collagen

56
Q

Produced by _________________, collagen make up around 70% of the dermis.

A

Fibroblasts

Laser 106 (1 decks)

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