1. Integumentary system - Skin, Nails, Hair, Glands
2. Skeletal System - Bones, Cartilage, Ligaments, Tendons
3.Muscular System - Skeletal Muscle, Visceral Muscle, Cardiac Muscle,
4. Nervous System - Central Nervous System ( Brain, Spinal Cord), Peripheral Nervous System (Nerves)
5. Endocrine System- Hypothalamus, Pituitary, Thyroid, Parathyroid, Adrenal, Pineal, Pancreas, Ovaries, Testes
6. Cardiovascular System - Heart, Veins, Artery, Capillaries
7. Lymphatic System - Lymph, Lymph nodes, Lymphatic vessels, Thymus, Spleen
8. Respiratory System - Nose, Sinuses, Pharynx, Trachea, Bronchial tubes, Lungs, Diaphragm, Ribs
9. Digestive System - Mouth, Esophagus, Stomach, Small Intestine, Pancreas, Liver, Gallbladder, Colon, Rectum, Anus
10.Urinary System - Kidneys, Ureter, Bladder, Urethra
11. Reproductive System - (Male) Penis, Prostate gland, Scrotum, Vas deferens, Urethra. (Female) Uterus, Vagina, Cervix, Fallopian tube, Ovary
2. The organ system that regulates acid-base balance in body fluid is the Urinary System/Respiratory System (kidney and lungs).