front 1 Respiratory | back 1 Airway and lungs |
front 2 Circulatory | back 2 Heart, blood, and blood vessels |
front 3 Nervous | back 3 Brain, spinal cord, and nerves |
front 4 Musculoskeletal | back 4 Bones, ligaments, muscles, and tendons |
front 5 Integumentary | back 5 Skin, hair, and nails |
front 6 Endocrine | back 6 Glands |
front 7 Digestive | back 7 Mouth, esophagus, stomach, and intestines |
front 8 Genitourinary | back 8 Kidneys, bladder, Uterus, genitalia |