Raw pumpkin seeds provide a rich source of fiber, a type of carbohydrate that prevents constipation and benefits digestive health. The seeds also boost your intake of protein -- each ounce of seeds provides almost 9 grams of the nutrient. You also increase your mineral intake when you eat pepitas.
Human Liver. Liver, largest internal organ of the human body. The liver, which is part of the digestive system, performs more than 500 different functions, all of which are essential to life.
The liver performs a variety of vital functions but it falls under the digestive system as it aids in digesting food. with the liver having so many functions it doesn't belong to one exact body system. though I would go with the digestive system.only because its part of our digestive processes......