What you will do today... -Name the largest organ of the integumentary system -List the general functions of the skin -Describe the structure of the layers.

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Presentation transcript:

What you will do today... -Name the largest organ of the integumentary system -List the general functions of the skin -Describe the structure of the layers of the skin

The Integumentary System Skin: The Largest Organ!

What are the functions of the skin? 1. Protection 2. Contains sensory devices 3. Gets rid of waste material

The layers of the skin 1. Epidermis a. Composed of squamous epithelium b. Made mostly of dead cells c. Cells are filled with a protein called keratin d. Melanin to absorb UV radiation

The layers of the skin 2. Dermis a. Sensory neurons b. Blood Vessels c. Muscle fibers d. Hair follicles e. Glands

The layers of skin 3. Layer of fat cells

Nails and Hair 1. Protect the body 2. Grow throughout life 3. Made of proteins

Glands 1. Exocrine glands a. Sweat b. Oil c. Release secretions through pores 2. Acne results from oil glands being clogged

References s/SKIN.gifhttp:// s/SKIN.gif p/en-commons/thumb/3/3d/300px-Skin.jpghttp://content.answers.com/main/content/w p/en-commons/thumb/3/3d/300px-Skin.jpg s/hotspots/level03integumentary.jpghttp:// s/hotspots/level03integumentary.jpg