Integumentary System

Challenge ? People who come from equatorial regions generally have darker skin while people who come from polar regions generally have lighter skin. Explain why. Explain why?

Connection ItemExplain how skin is like each item (Hint – think about the job of each item and then how skin performs a similar job.) Tupperware Air conditioner Filter Key board

Vocabulary- Describe structure & Function Dermis Epidermis Hair follicle Melanin Sweat gland

Resources Holt Life Science pages Guided Notes Bill Nye Skin Video and Questions Bill Nye Skin Video

ObjectiveNotes List & Describe the major functions of the integumentary system ID and describe the functions of the major parts of skin (Draw diagram Pg. 535 below to identify parts) Epidermis- Dermis- Blood vessels- Nerves- Hair follicles- Oil glands- Sweat glands-

ObjectiveNotes List & Describe the major functions of the integumentary system Protection – keeps moisture in and dirt out Sense of touch – lets you feel the world Temperature control – warmth & cooling (sweating) Waste removal – waste from blood stream gets excreted through sweat ID and describe the functions of the major parts of skin (Draw diagram Pg. 535 below to identify parts) Epidermis- top layer of skin, very thin; top most part is dead skin which helps make skin tough Dermis-under the dermis, mostly connective tissue, house the nerves, blood vessels, glands & follicles Blood vessels-transport substances and regulate temperature Nerves-carry messages to and from the brain Hair follicles- produce hair for protection and warmth Oil glands- keeps hair flexible and skin waterproof Sweat glands- regulate heat and release wastes

Challenge ? Circle all of the things that are true of skin – Skin is not an organ – Skin can release wastes from the body – Skin can heal itself – Skin can act like a sunscreen – Skin keeps out germs – Hair and nails are not part of skin – Skin has one main layer

Connection – Try Again Hint – you have to identify the main function of each item then tell how skin performs a similar function.

Challenge ? Try Again These are hints. You still need to form a complete answer even after answering the hint questions. These are to point the way toward the correct answer. – Why would people in certain regions need more melanin than people in other regions? – What does the equator have more of than the poles?