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Integumentary System

Integumentary System. sebaceous. Arrector pili. epidermis. receptor. dermis. hypodermis. Hair follicle. Sweat gland. Integumentary system. Layers of the Skin Epidermis Outer, thinner portion of the skin

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Integumentary System

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  1. Integumentary System

  2. sebaceous Arrectorpili epidermis receptor dermis hypodermis Hair follicle Sweat gland

  3. Integumentary system • Layers of the Skin • Epidermis • Outer, thinner portion of the skin • The top layer is composed of dead epidermal cells that contain keratin which makes the skin waterproof • The second layer is composed of melanocytes that secrete melanin which gives color to the skin and protects the cell from harmful rays of the sun

  4. Integumentary system • Layers of the Skin • 2. Dermis • Inner, thicker portion of the skin • Composed of the following structures: • Hair follicle • Sweat gland • Oil Gland • Arrectorpili • Nerve Receptor • Blood vessels

  5. Integumentary system • Dermis • Hair Follicle • A cavity where hair grows Sweat Gland • Produces sweat to cool down the body Oil/Sebaceous Gland • Produces Oil to lubricate the hair

  6. Integumentary system • Dermis • ArrectorPili • Pulls the hair perpendicularly in response to changes in temperature Nerve Receptors • Receive stimuli from the envirenment and relay information to the brain Blood Vessels • Supply oxygen to the skin

  7. Integumentary system • Layers of the Skin • 3. Hypodermis/Subcutaneous • Composed of fat deposits that cushion the body to help the body insulate and help the body retain heat. • Store energy in the form of lipids

  8. Video presentation

  9. Hairs and nails • Nails are compose of dead cells called keratin. They protect the tips of fingers and toes.

  10. Quiz

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