List of systems of the human body

The main systems of the human body are:
 * 1) Circulatory system
 * 2) Digestive system/Excretory system
 * 3) Endocrine system
 * 4) Integumentary system/Exocrine system
 * 5) Lymphatic system/Immune system
 * 6) Muscular system
 * 7) Nervous system
 * 8) Reproductive system
 * 9) Respiratory system
 * 10) Skeletal system
 * 11) Urinary system