1. Blood, water, and lymph system: 100 pounds
2. Bones: 21 pounds
3. Brain: 2.5 pounds
4. Heart: 0.25 pounds
5. Other Muscles (Everything from your stomach to your biceps): 52 pounds
6. Carotid-Artery Walls (in the Neck): 20 milligrams
7. Kidneys: Half pound
8. Liver: 3.25 pounds
9. Lungs: 1.8 pounds
10. Pancreas: 0.2 pound
11. Prostate: 18 to 20 grams, or just barely an ounce
12. Skin: 12 pounds
13. Spinal Cord (Nerves, Not Bone): 1 ounce
14. Testicles: Less than 2 ounces
1 pound = 453g