How much do human internal organs weigh?

The approximate weights of some major human internal organs are as follows:

1. Brain: The average adult human brain weighs around 1.3-1.4 kilograms (approximately 3-3.1 pounds).

2. Heart: The heart weighs approximately 250-350 grams (about 0.55-0.77 pounds) in adult humans.

3. Lungs: The lungs together weigh around 1.0-1.5 kilograms (approximately 2.2-3.3 pounds).

4. Liver: The liver is the largest internal organ in the human body and weighs around 1.5-2 kilograms (approximately 3.3-4.4 pounds).

5. Kidneys: Each kidney weighs approximately 150-200 grams (about 0.33-0.44 pounds).

6. Stomach: The empty stomach weighs around 200-250 grams (approximately 0.44-0.55 pounds).

7. Intestines: The small intestines weigh around 2-3 kilograms (about 4.4-6.6 pounds), and the large intestines weigh approximately 1-1.5 kilograms (around 2.2-3.3 pounds).

8. Pancreas: The pancreas weighs around 100-150 grams (approximately 0.22-0.33 pounds).

9. Spleen: The spleen weighs approximately 150-200 grams (about 0.33-0.44 pounds).

It's worth noting that these weights can vary among individuals based on factors such as age, gender, and overall body size.