2. Integumentary System  It is the body covering.  Includes:  skin, hair, nails and sweat glands  Function:  protect underlying tissues and regulate body temperature

3. Skeletal System  Includes:  bones, ligaments, cartilage  Function:  Support, movement, protection, and production of blood cells

4. Muscular System  Includes:  Muscles of the body  Function:  Movement, maintenance of posture, production of body heat

5. Nervous System  Includes:  Brain, spinal cord, nerves throughout the body  Function:  Communication throughout body, mental activities, maintaining homeostatsis

6. Endocrine System  Includes:  Ductless glands= pituitary, adrenal, thyroid, parathyroid, pancreas, ovaries, testes, thymus, pineal gland  Function:  Secretion of hormones, communication between body parts

7. Digestive System  Includes:  Mouth, teeth, pharynx, esophagus, stomach, small intestines, large intestines, liver, gall bladder, and many glands including the pancreas  Function:  Breakdown of food substances into simpler forms that can be absorbed (digestion)

8. Circulatory System  Includes: heart, blood vessels, blood  Function:  Transports materials throughout the body  *Lymphatic system usually included with the circulatory system

9. Urinary System  Includes: Kidneys, ureters, urinary bladder, urethra  Function: Removes (“filters”) wastes from the blood and helps maintain the body’s water & electrolyte balance

10. Reproductive System  Includes: reproductive organs, primarily the ovaries (females) and testes (males)  Function: produce special reproductive cells for reproduction