Integument system Flashcards

1
Q

What type of membrane is the skin

A

cutaneous

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2
Q

What are the 2 layers of the skin

A
  1. Epidermis 2. Dermis
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3
Q

What are the 5 functions of the integument system

A
  1. Protection 2. Temperature regulation 3. Role in vitamin D production 4. Protects against excessive water loss or gain 5. Sensation
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4
Q

What is the most superficial skin layer

A

Epidermis

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5
Q

The epidermis is _____ and ______

A

avascular and innervated

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6
Q

What type of cells is the epidermis composed of

A

stratified squamous epithelium

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7
Q

How many layers is typically in the epidermis

A

4

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8
Q

How many layers are in the epidermis of the palmar and plantar regions

A

5

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9
Q

What are the 5 epidermal layers from deepest to most superficial

A
  1. Stratum basale 2. Stratum Spinosum 3. Stratum granulosum 4. Stratum lucidum 5. Stratum corneum
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10
Q

What is the epidermal layer that only the palmar and plantar regions have

A

Stratum lucidum

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11
Q

Which epidermal layer creates new skin cells

A

Stratum basale

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12
Q

Which epidermal layer is the clear layer

A

Stratum lucidum

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13
Q

Which epidermal layer is composed of keratinocytes

A

Stratum corneum

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14
Q

In which epidermal layer does fiberous keratin start to form

A

Stratum spinosum

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15
Q

In which epidermal layer do the cells start to flatten

A

Stratum granulosum

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16
Q

Keratinocytes

A

Keratin filled squamos cells

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17
Q

What is the most abundant epidermal cell type

A

Keratinocytes

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18
Q

Melanocytes

A

cells that produce the pigment melanin

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19
Q

What are 2 functions of melanin

A
  1. Gives skin pigment 2. Protects against UV radiation
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20
Q

Dendritic cells

A

Immune cells

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21
Q

Merkel cells

A

Receptor cells

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22
Q

Where are hair follicles found

A

Dermis

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23
Q

Where are glands mainly found

A

Dermis

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24
Q

What is the bundle of smooth muscle tissue that causes goosebumps called

A

Arrector pili muscle

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25
What layer of skin is deep to the epidermis
Dermis
26
The dermis is _____ and ______
vascular and innervated
27
What type of tissues is the dermis composed of
connective tissues
28
What are the 2 sublayers of the dermis
1. Papillary dermis 2. Reticular dermis
29
What is the most superficial dermal layer
Papillary dermis
30
What is the deeper and thicker dermal layer
Reticular Dermis
31
What type of connective tissue makes up the papillary dermis
areolar connective tissue
32
What type of connective tissue makes up the reticular dermis
dense irregular connective tissue
33
What are the wavy projections on the surface of the papillary dermis called
papillae
34
What layer of the dermis creates finger prints
Papillary Dermis
35
What do blood vessels do when body temp drops below the set point
constrict
36
What do blood vessels do when body temp rises above the set point
dilate
37
What layer is not a true layer of skin
hypodermis
38
What type of connective tissue makes up the hypodermis
adipose connective tissue
39
What are 3 functions of adipose connective tissue
1. Energy storage 2. Insulation 3. Protection
40
What are the two most common exocrine glands of the skin
1. sudoriferous/ sweat glands 2. sebaceous glands
41
What are the 2 subtypes of sudoriferous/ sweat glands
1. Eccrine 2. Apocrine
42
Where are eccrine glands found
everywhere
43
What do eccrine glands secrete
Mostly water and some electrolytes
44
Where are apocrine glands found
The axillary and anogenital regions
45
What do apocrine glands secrete
water, proteins, and lipids which are fed on by bacteria to cause B.O.
46
What do sebaceous glands secrete
sebum/oil
47
What are the 2 functions of sebaceous glands
1. Lubricate skin and hair 2. form acid mantle
48
What two places do not have sebaceous glands
Palmar and Plantar regions
49
When are sebaceous glands activated
Puberty
50
What do ceruminous glands secrete
cerumen/ear wax
51
What do mammary glands secrete
breast milk
52
In what two ways are tissues repaired
1. regeneration 2. Fibrosis
53
Regeneration
Lost cells replaced by same cell type
54
Fibrosis
Lost cells replaced by scar tissue
55
1st degree burns affect the
epidermis
56
2nd degree burns affect the
epidermis and upper dermis
57
3rd degree burns affect the
entire skin
58
Rule of Nines
Used to asses the extent of burns on the body
59
What is the most common form of cancer
Skin
60
What are the 3 common types of skin cancer
1. Basal cell carcinoma 2. Squamous cell carcinoma 3. Malignant melanoma
61
What is the least dangerous skin cancer
Basal cell carcinoma
62
What is the most dangerous skin cancer
Malignant melanoma
63
What are the ABCDE of skin cancer
Asymmetry Border Color Diameter Evolution