The Skin or Integumentary System

• skin, hair, nails, feathers, claws, and hooves - functions: waterproof, cushion, excrete, protect, regulates temperature, helps sensory organs

• hair shaft (it is the part of hair you can see on your skin) • oil glands (they are kind of puffy, and they help keep the skin moist • hair follicle (this is where the hair grows under your skin) • sweat gland (they help the body regulate its temperature) • artery/vein (it circulates blood) • fatty tissue (they protect arteries and veins, or cushion an organ, etc.)

• epidermis: thin, upper layer of tissue - dermis: thicker, inner layer of tissue