Work from today will go on p. 45 AFTER SIGNATURE Sponge: Set up Cornell Notes on pg. 47 Topic: 6.6 Aging and Skin Cancer Essential Questions: What is the most common type of skin cancer? WHO is most likely to develop this cancer? 6.6 Aging and Skin Cancer 2.1 Atoms, Ions, and Molecules What is the most common type of skin cancer? WHO is most likely to develop this cancer? Skin Deep p. 44 Work from today will go on p. 45 AFTER SIGNATURE

Life Span Changes Why are we more aware of aging-related changes in skin than in other organ systems? We can easily see them Aging affects appearance

Life Span Changes Aging skin affects appearance, temperature regulation, and vitamin D activation

Life Span Changes- Epidermis Thins Cell cycle slows Epidermal cells grow larger and irregular in shape Skin may appear scaly Age spots or liver spots appear/grow

Life Span Changes-Dermis Dermis is reduced as the production of collagen and elastin slows Loss of fat from subcutaneous layers Sagging and wrinkling of the skin Delay of wound healing Decrease of oil production Dry skin

Life Span Changes-Accessory Structures Melanocytes: Melanin production slowed Grays or whitens hair Hair: Hair follicles decrease in # Hair growth slows Hair thins Males may develop baldness Less sensitive

Life Span Changes-Accessory Structures Nails: Diminished blood supply to nails impairs growth Dull and hardened Receptors: Number of pain/pressure receptors decline Less sensitive

Life Span Changes-Accessory Structures Temperature Regulation: Ability to control temperature falters as sweat gland and hair follicle shrink and # decreases Ability to shiver declines Less able to tolerate heat/cold Skin color: Fewer blood vessels underlying the skin May appear pale

Life Span Changes-Accessory Structures Vitamin production: Vitamin D production goes down Loss of ability to maintain bone structure Must take vitamins

p. 46 Skin Cancer Skin Cancer begins when ultra violet radiation mutates the DNA of a skin cell Usually arises from non-pigmented epithelial cells within the deep layer of the epidermis OR from pigmented melanocytes

p. 46 Skin Cancer Melanoma Carcinoma

Cutaneous carcinomas are skin cancers originating from the epithelial cells Most common type of skin cancer Occur most freq. in light-skinned people over 40 yrs old Usually appear in people who are regularly exposed to sunlight 2 types: Basal cell carcinoma Squamous cell carcinoma

Cutaneous Melanomas arise from the melanocytes Seems to be caused by short, intermittent exposure to high-intensity sunlight Appear most often in the skin of the trunk, back, and on limbs

Clinical Application 6.1: Skin Cancer Read Clinical App 6.1 Answer the Questions HIGHLIGHT + Number the answers in the reading (as evidence) Read A Tan is not a Sign of Health HIGHLIGHT important info GET FROM TRAY p. 46

Taping Time (if time) 32: Children die after being left in hot cars article 34: Layers of the skin (1/2 sheet) 36: 6.3 Clinical Application 42: Skin color map (colored in class) 44: Skin Deep article 45: The Human Spectrum handout/answer sheet 46: 6.1 Clinical App

Google Docs Group Presentation Skin Cancer Project Google Docs Group Presentation

Day 1 As a group you will design a Google Slide presentation to educate the class on a particular topic related to skin cancer. Groups assigned by # (1-9) Planning/Research Only one person in the group will submit the project Submit MON at end of period PRESENTATIONS ON TUES/WED/THURS (if needed)

Day 2 As a group you will design a presentation to educate the class on a particular topic related to skin cancer. Create Google Slide Presentation

Day 3 As a group you will design a presentation to educate the class on a particular topic related to skin cancer. Finish Google Slide Presentation Turn into Google Classroom under 1 person’s name Must be in Google slides Practice for presentation

Skin Cancer Presentations As a group you will design a presentation to educate the class on a particular topic related to skin cancer.

Study Guide Complete the study guide MUST be complete by tomorrow It is your only resource to take the practice test Finished? Study or Notebook *Will not be collected until Friday

UV Bead Activity

UV Light Read the background on UV light Highlight important details Fill out the prediction portion on the back of your sheet Come up with 5 tests of your own

UV Light Get in pairs Test as many scenarios as possible Each pair gets 3 beads Test as many scenarios as possible Choose 5 of your own Answer the questions on the bottom