Skin and Integumentary
System
Skin Includes the following structures
Skin
Hair
Nails
Sweat Glands
The LARGEST ORGAN
Functions
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6)
Covers body and prevents water loss
Protects from injury and infection
Helps regulate body temperature
Eliminates wastes (Water ,salt, urea)
Gathers information about environment
Produces vitamin D
Homeostasis
• The skin helps to maintain a stable internal environment by regulating body temperature.
• Hot= sweating (evaporative cooling) surface vessels dilate to allow heat exchange
• Cold= Goosebumps/ triggers shivering (Body heat produced by the muscles)
Environmental information
• Senses =
• Temperature
• Pain
• Pressure