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The Epidermis > Epidermis & Integumentary System > Flashcards

Epidermis & Integumentary System Flashcards

1
Q

Skin Histology?

A

Is the study of the structure and composition of skin tissue.

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2
Q

Skin Physiology?

A

Is the study of the functions of skin tissues

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3
Q

What are the components of the Integumentary System ?

A

Skin
Hair
Nails
Glands

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4
Q

Why is the integumentary system important for the heath of our body?

A

the integumentary system protects us from the exterior environment.

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5
Q

What are the appendages of the skin?

A

Epithelial derivatives

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6
Q

Where is the skin the thickest and the thinnest?

A

Thickest: Palms, Soles, & Tzone
Thinnest: Eyelids

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7
Q

What are the characteristics of a healthy skin?

A 
Soft
Moist
Flexible
PH: 5.5-5.6
Even Pigmentation
Free of disease
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8
Q

6 primary functions of the Integumentary system?

A 
P - protection 
A - absorption 
S - secretion 
S - sensation 
E- excretion
R - regulation of temperature
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9
Q

Examples on how our skin protects us

A

Melanin- UV radiation

Acid Mantle- chemical barrier on surface

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10
Q

What is the functions of the Acid Mantle?

A

PH: 5.5-5.6.
Protects against pathogenic bacteria and transepidermal waterloss.
Made up of Sebum, Sweat, Water, and Keratohyalin.

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11
Q

What 2 pigments are found in the body and what color do they produce?

A

Pheomelanin: red to yellow
Eumelanin: brown to black

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12
Q

What is the acid mantle made up of?

A

Sebum, sweat, water, and keratohyalin.

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13
Q

How does our skin regulate our body temperature?

A

Perspiration & Evaporation, Insulation

When we get cold our arrestor pilli muscle traps in heat ( sticks our hairs up and gives us goosebumps)

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14
Q

Why is sebum important for the health of our skin

A

Keeps skin lubricated, soft and hydrated, also important part of the acid mantle.

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15
Q

3 major layers of our skin?

A

Dermis
Epidermis
Subcutaneous (Hypodermis)

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16
Q

What are the 5 layers of the epidermis?

A

Stratum Corneum, Stratum Lucidum, Stratum Granulosum, Stratum Spinosum, & Stratum Germinativum.

17
Q

Keratinization Process?

A

The 28 days upward migration of skin cells from the stratum germinativum to startup corneum.

18
Q

What happens during Melanogenesis?

A

Melanin is produced and transported from the melanocyte to the surrounding cells.

19
Q

What is Desquamation?

A

Natural Shedding Process of the skin

20
Q

Function of the basement membrane?

A

Transports nutrients from the vascular (contains blood) dermis to dermis to the avascular (no blood) epidermis.

Made up of proteins and sugars

21
Q

STRATUM CORNEUM

of cells thick, water %, special features

A

of cells thick: 15- 20
water % : 5-10%
special features: Desquamation, 60% protein.

22
Q

STRATUM LUCIDUM

of cells thick, water %, special features

A 
# of cells thick: 3-5
water % : 10-20%
special features: thickest on palms and soles / gives us fingerprints
23
Q

STRATUM GRANULOSUM

of cells thick, water %, special features

A

of cells thick: 3-5
water % : 20- 60 %
special features: keratohyalin, membrane coating granules

24
Q

STRATUM SPINOSUM

of cells thick, water %, special features

A

of cells thick: 5-8
water % : 60- 70 %
special features: keratin production occurs, langehans immune cells, & desmosomes.

25
Q

STRATUM GERMINATIVUM

of cells thick, water %, special features

A

of cells thick: 1
water % : 70- 40 %
special features: only miotic layer
contains melanocytes & desmosomes.

26
Q

A melanocyte is embryologically derived from

A

Nerve Tissue

27
Q

This hard protein provides the skin, hair, and nails with their protective function.

A

Keratin

28
Q

This structure separates the epidermis and the dermis

A

Basement Membrane/ Dermoepidermal Junction

29
Q

The cell processes that holds cells together in the germinativum and spinosum layer

A

Desmosomes

30
Q

Substances that coats the inside of the cell making it much stronger

A

membrane coating granules

31
Q

Intercellular lipid glue that holds dead skin cells together

A

Keratohyalin

32
Q

The process of melanin being produced in the skin

A

Melanogenesis

33
Q

The enzyme that needs to be present for melanin production

A

Tyrosinase

The Epidermis (1 decks)

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