Integumentary System

Integumentary System - Integumentary System Skin +...

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1 Integumentary System Skin covers body—2 square yards of surface area Related terms: cutaneous, dermato- (e.g. dermatology) Contains sensory receptors, provides awareness of surroundings and allows touch communication Skin + accessory organs (e.g. hair, nails, sweat glands)
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2 Epidermis consists of: created by mitotic activity in deep layer, waterproofing, become flat, dead, shed after 50-60 days involves in immunity involved in touch sensation produce melanin which is inserted into keratinocytes Thick vs Thin Skin
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3 Psoriasis • Psoriasis is a skin disease that causes scaling and swelling. • Keratinocytes rise to the surface too fast and pile up on the surface. • Most psoriasis causes patches of thick, red skin with silvery scales. – patches can itch or feel sore. – often found on the elbows, knees, other parts of the legs, scalp, lower back, face, palms, and soles of the feet. – can show up other places such as fingernails, toenails, genitals, and inside the mouth. Warts • A wart is usually a harmless skin growth caused by some types of the virus called the • There are more than 100 known types of HPV. • HPV infects the top layer of skin, usually entering the body in an area of broken skin. The virus causes the top layer of skin to grow rapidly, forming a wart.
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This note was uploaded on 04/17/2008 for the course BIO 1004.212.0 taught by Professor Douglasmerrill during the Winter '07 term at RIT.

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Integumentary System - Integumentary System Skin +...

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