The Skin

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PROTECTION; Stratum corneum acts as
a physical barrier and protects against pathogens
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Keratin function=
protected underlying structures from microbes, abrasion, heat and chemicals
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Lipids=
Prevent evaporation of water
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Sebaceous glands=
Produce oily serum helping eliminate bacteria and prevents drying out of skin
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Menalin=
Some protection against UV light
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Lamellor granules=
Release water repellant sealant
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IMMUNITY; Langerhen cells=
types of WBC produced in red bone marrow and migrate to epidermis. They are antigen producing dendritic cells
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Dendritic cells=
Absorb pathogens and antigens before migrating to lymph nodes and simulate T cells
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Macrophages in the dermis functions?
Phagocytize bacteria and viruses
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How many epidermis layers?
4 primary layers, thickened skin 5 layers
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Layers are called?
Stratum basale, stratum spinous, stratum granulosum, stratum lucidum, stratum corner
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THERMOREGULATION; function of piloerectile muscle?
Raises and lowers hair trapping air beneath which warms and generates heat
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Sweat is released??
By glands through pores
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Vasoconstriction of vessels takes?
Blood away from the surface
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Vasodilation of vessels takes?
Blood towards the surface
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Hypodermis contains..
Andipose tissue which insulates and prevent heat loss
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SENSTIVITY; Missners corpuscles are found..
In dermal papillae and usually found in hairless skin
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What are hair follicle receptors sensitive to?
Vibration
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Nerve endings in the..
Epidermis respond to pressure, temperature and touch
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What responds to touch and static pressure?
Merkel's disks
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What are sensitive to vibration and pressure?
Pacinian corpuscles
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The dermis is made up of 3 layers..
Papillary layer, reticular layer, dermal papillae
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Responsible for skin colour?
Melanin, carotene and haemoglobin
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The skin holds 10% of..
Total blood flow
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The skin is also responsible for
excretion (salt, CO2, ammonia and urea) and absorption (lipid soluble substances)
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What anchors the dermis to the subcutaneous layer?
Fibres
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Hypodermis/subcutaneous layer consists of..
andipose tissue and blood vessels
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Other cards in this set

Card 2

Front

Keratin function=

Back

protected underlying structures from microbes, abrasion, heat and chemicals

Card 3

Front

Lipids=

Back

Preview of the front of card 3

Card 4

Front

Sebaceous glands=

Back

Preview of the front of card 4

Card 5

Front

Menalin=

Back

Preview of the front of card 5
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