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Tissues > Skin > Flashcards

Skin Flashcards

1
Q

What are 5 functions of the skin?

A 
Protection
Thermoregulation
Water regulation
Sensation
Absorption
Storage and synthesis
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2
Q

What layer is present in thick skin and NOT in thin skin?

A

Stratum lucidum

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3
Q

What is not found in the epidermis?

A

Blood vessels

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4
Q

What cells in the epidermis are sensory receptors?

A

Merkel cells

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5
Q

What do melanocytes in the epidermis produce?

A

Melanin

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6
Q

What are the 5 layers of the epidermis? (thick skin)

A 
Stratum corneum
Stratum lucidum
Stratum granulosum
Stratum spinosum
Stratum basale
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7
Q

Which cells make up 95% of epidermal cells?

A

Keratinocytes

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8
Q

What is the strong, connective tissue layer rich in collagen and elastic fibres?

A

The dermis

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9
Q

What is the dermis?

What is it rich in?

A

A strong, connective tissue layer.

Rich in collagen and elastic fibres.

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10
Q

What does the dermis contain?

A 
Blood vessels
Lymphatics
Fibroblasts
Nerves
Glands
Hair follicles
Macrophages
Smooth muscle
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11
Q

What are the 2 layers of the dermis?

A

Papillary and reticular layer

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12
Q

What layer of the dermis is rich in capillaries and nerve endings?

A

Papillary layer

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13
Q

What layer of the dermis is dense connective tissue containing fibres?

A

Reticular layer

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14
Q

What disease is the loss of skin pigment?

A

Vitiligo

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15
Q

What causes squamous cell carcinoma?

A

Keratinocytes in the epidermis grow out of control and form a tumour

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16
Q

What kind of connective tissue is the lamina propria?

A

Loose fibrous connective tissue (areolar)

17
Q

What is the lamina propria and where is it?

A

A supportive areolar layer.

Beneath the mucosal epithelium and its basement membrane.

18
Q

What are the 2 components of the lamina propria?

A

Cells and extracellular matrix

19
Q

What cell types are present in the lamina propria?

A

Fibroblasts and immune cells

20
Q

What are the 2 components of the mucosa?

A

Epithelium and lamina propria

21
Q

What epithelium is present in the trachea?

A

Ciliated pseuodstratified epithelium

22
Q

What is rich in the lamina propria of the trachea?

A

Elastin fibres

23
Q

What epithelium are present in the oral mucosa?

A

Stratified squamous epithelium

24
Q

What are rete ridges?

A

Epithelial extensions that project into the underlying connective tissue in skin and mucous membranes

25
Q

What are the epithelial extensions that project into the underlying connective tissue in skin and mucous membranes?

A

Rete ridges

Tissues (8 decks)

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