1. ___________ glands … _________ ______ glands Abundant & widespread, mostly H 2 O, ducts to surface of skin, myoepithelial cells. Less abundant, found in ______, _____, _____ regions (& faces of men), > conc. Of ______ ______, bacteria breakdown cause rancid smell, ducts to hair follicles. BIOL 2010 Human Anatomy & Physiology I What type of glands are in the skin?

2. __________ glands … Secrete _________ (oily substance) often into hair follicle (holocrine glands). Other glands… ____________ What type of glands are in the skin?

3. Anatomy: _____ _____ _____ Growth from ________! Above skin Skin - to matrix Matrix to papilla What’s all the fuzz about?

4. Fetus & newborns Fine unpigmented hair Coarse pigmented hair Types: _______ _______ Texture: Straight Wavy Kinky _________ in cross-section Colors: Blonde - Black Red White Varying amounts of _______ ___________ pigment No melanin, ____ in medulla What’s all the fuzz about?

5. Predict #3 - pg. 146 Marie Antoinette’s hair supposedly turned white overnight after she heard she would be sent to the guillotine. Explain why you believe or disbelieve this story! Take 5!!! Discuss with your neighbor and predict an answer.

6. Growth also from ________ and also comprised of dead epithelial cells and _______ _______ What portion of the nail would a physician have to remove to eliminate the nail? Let’s nail down the anatomy!

7. Caused by: __________ ____________ Group of pigments (black, brown, yellowish, or reddish). Produced by __________ ____________ O 2 transporting molecule in blood (__ makes it red) Yellow/orange pigment What causes differences in skin color?

8. Abnormal skin colorations: ________ Cyan = blue Pallo = sway Albi = white Eryth = red What about abnormal skin colorations?

9. Burns are ranked based on the severity and the depth of tissue destruction. 1st degree: ____________ damaged ~ red & painful, NO blisters 2nd degree: _________ & some _______ damaged ~ red, white or tan, very painful, BLISTERS present 3rd degree (full thickness) _____ _______ ___________ ~ black, NO pain, NO blisters Why are burns some of the most painful injuries?

10. Have you ever wondered how they measure % of body burned? They use the rule of 9s. 9 +9 = 189 18 + 18 = 36 18 +18 = 36 1 = 100% How do you determine the extent of a burn?

11. _______ _____ forms (we’ll discuss later) Variety of new cells _________ to damaged area ____________divide rapidly and ________ invade tissue _______ replaced with other fibers How do skin wounds heal? 12 34

12. Types are identified based on the type of cells that mutate: _____ ___ carcinoma Least dangerous, start as “shiny” bump, center becomes concave and ulcerus _________ ___ carcinoma ___________ Raised, red, “scaly” & ulcerus, can metastasize Dark, flat, irregular, most deadly Is all skin cancer equally dangerous?