Transcript
Page 1: What you will do today .

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

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The Integumentary System

Skin: The Largest Organ!

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What are the functions of the skin?

1. Protection

2. Contains sensory devices

3. Gets rid of waste material

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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

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The layers of the skin

2. Dermis

a. Sensory neurons

b. Blood Vessels

c. Muscle fibers

d. Hair follicles

e. Glands

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The layers of skin

3. Layer of fat cells

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Nails and Hair

1. Protect the body

2. Grow throughout life

3. Made of proteins

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Glands

1. Exocrine glands

a. Sweat

b. Oil

c. Release secretions through pores

2. Acne results from oil glands being clogged

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References

• http://www.rogers.k12.ar.us/users/ehutches/SKIN.gif

• http://content.answers.com/main/content/wp/en-commons/thumb/3/3d/300px-Skin.jpg

• http://www.wiredtowinthemovie.com/images/hotspots/level03integumentary.jpg

• http://library.thinkquest.org/3007/skin.jpeg


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