Integument Flashcards

(45 cards)

1
Q

Simple

A

1 layer

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2
Q

Stratified

A

2 or more layers

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3
Q

Pseudostratified

A

Looks like many layers but only one

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4
Q

Squamous

A

Pancake

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5
Q

Cuboidal

A

Cube

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6
Q

Columnar

A

Talk column

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7
Q

Keratinocyte

A

Filled with keratin
Layers reflect 25-45 day life cycle
Cell dies as it moves away from blood supply

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8
Q

Eumelanin

A

Brown or black

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9
Q

Pheomelanin

A

Yellow or red

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10
Q

Melanocytes absorb and protect the body from

A

UV

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11
Q

Why does some UV have to be absorbed

A

Must reach precursor to make vitamin D for calcium

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12
Q

Melanosomes

A

Package melanin

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13
Q

Unipotent

A

Stem cells make one cell

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14
Q

Pleuripotent

A

Stem cells make any cell

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15
Q

Niche

A

Group of stem cells

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16
Q

Thick skin

A

5 layers

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17
Q

What layer does thin skin not have

A

Lucidum

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18
Q

Bottom layer of epidermis and cells in it

A

Basal layer
Melanocytes, langerhans, stem cells, keratinocytes
Single cell thick

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19
Q

Second layer of epidermis

A

Spiny layer
Langerhans cells= immune cells
Prekeratin fibers
Several layerw

20
Q

Third layer

A

Granular layer
3-5 cells
Lamellated granules
Cells begin to die

21
Q

Fourth layer

A

Lucidum
Translucent
2-3 cells

22
Q

Top layer

A

Corneum
20-30 layers of dead cells

23
Q

Top layer of the dermis

A

Papillary layer
Touch and pain receptors

24
Q

Bottom layer or dermis

A

Reticular
Collagen

25
Hypodermis is made of
Adipose fissure or fat
26
Most common protein in body
Collagen
27
Most common skin cancer and percent
Basal cell carcinoma 80%
28
Squamous cell carcinoma
20% of all skin cancers In spiny layer More aggressive because of angiogenesis
29
Melanoma
1% of skin cancers but 90% of deaths in skin cancer Melanocytes grow out of control and met to blood and lymph
30
ABCDE
Asymmetry border irregularities color diameter elevation
31
What burn is epidermis only
First
32
2nd degree burn
Blistering in epidermis and upper dermis
33
Why is 3rd degree so dangerous
Dehydration and electrolyte loss which messes up cardiac rhythm> cardiac arrest Bacterial infection easily turns into sepsis
34
Rule of 9s
Head 4.5 Arms 4.5 Legs 9 Torso 18
35
What percent is critical in 2nd degree
25%
36
What percent is critical in 3rd degree
10%
37
Eccrine glands are under the control of
Sympathetic nervous system
38
Where are eccrine glands and purpose
All over body Regulate temp Release waste
39
Apocrine glands are under the control of
Androgens
40
Where are apocrine glands and when do they start
Armpits & genitalia Puberty
41
Acinar gland shape
Berry
42
What do acinar glands make and what are they under the control of
Sebum, androgens
43
Vellus hair
Fine peach fuzz
44
Terminal hair
Thick on head
45
Hair anatomy from inside out
Medulla, cortex, cuticle