Integumentary System.

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Presentation transcript:

Integumentary System

Integumentary System Composed of skin, hair, sweat glands, and nails The name is derived from the Latin integumentum, which means “a covering.” The skin, considered the largest human organ, covers the body. The hair covers the head and other parts of the body. The nails cover the tops of the fingers and toes. http://upload.wikimedia.org/wikipedia/commons/5/5d/Anatomy_The_Skin_-_NCI_Visuals_Online.jpg

Integumentary System Functions include: Protects the body’s internal tissues and organs Protects against infectious organisms and injury Prevents loss of body fluids http://upload.wikimedia.org/wikipedia/commons/5/5d/Anatomy_The_Skin_-_NCI_Visuals_Online.jpg

Integumentary System Functions include: Regulates body temperature through sweat and regulating peripheral blood flow Removes waste from the body through perspiration Generates vitamin D through exposure to UV light http://commons.wikimedia.org/wiki/File:Fingernails.jpg

Integumentary System Functions include: Protects against sunburns from UV rays Stores fat for fuel and insulation Sensory organ with receptors for touch, pressure, pain, heat, and cold http://commons.wikimedia.org/wiki/File:Human_Hair_10x.JPG http://commons.wikimedia.org/wiki/File:PSM_V71_D115_Cross_section_of_human_skin_displaying_hair_follicles.png

Integumentary System Hair is composed of strong, dead protein called keratin. This same protein makes up the nails and outer layer of skin. Most of the keratin people interact with is dead. The body sheds the old cells as new cells push up from underneath. http://commons.wikimedia.org/wiki/File:Human_Hair_10x.JPG http://commons.wikimedia.org/wiki/File:PSM_V71_D115_Cross_section_of_human_skin_displaying_hair_follicles.png