Hair, Nails, Infections

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3 in 3 3 things from last class in 3 minutes

Homework Review

Homework

Answer questions from the text book Pages and number to be determined

Where does hair come from?

Produced by a hair follicle

Daughter cells are created and pushed away Die

Due to death, almost entirely protein

Function

Minor protective functions Guard against bumps

Keeps sweat out of eyes

Shields eyes

Keeps foreign particles out of respiratory tract

Nail

Modification of the epidermis

Comparable to a hoof or claw of other animals

Transparent/colorless Pink color is from large blood supply

Blue color signifies lack of blood supply

Infections

Athlete’s foot Itchy, red, peeling between toes

Fungus

Infections

Boils Inflammation of the hair follicle

Bacterial infection

Form of staph infection

Infections

Cold Sore (fever blisters) Itch and sting

Herpes Simplex infection

Remains dormant until activated by emotional upset, fever or UV radiation

Infections

Contact Dermatitis Itching, redness and swelling of skin

Caused by an exposure to chemicals

Infections

Impetigo Pink, water filled lesions

Develop to yellow crust

Caused by highly contagious staph infection

Infections

Psoriasis Chronic

Overproduction of skin cells Red lesions

Cover with dry, silvery scales

Believed to be caused by body’s own immune system attacking a person’s tissues

Triggered by trauma, stress or infection

Infections

Methicillin-Resistant Staphylococcus Aureus (MRSA)

Resistant to most antibiotics

Open wounds or sores that become infected

Bill Nye!

http://www.youtube.com/watch?v=hUcyEhukn1M

Homework

Answer questions from the book Pages and numbers to be determined