Hair

• Hair - consists of layers of keratinized cells, found over much of the body except for the lips, nipples, soles of the feet, palms of the hands, labia minora, and penis
• Hair develops within a sheath of epidermal cells called the hair follicle
• Arrector pili muscles contract in response to cold or fright, decreasing skin surface area and causing the hair to stand erect
• Vellus hair (peach fuzz) - is short, pale, fine and present over much of the body
• Terminal hair - longer, darker and coaster than vellum hair