What is the main function of the pancreas?

The primary function of the pancreas involves both the production of insulin and aiding in digestion. The pancreas plays a crucial role in regulating blood sugar levels by producing insulin, which helps cells absorb glucose from the bloodstream for energy or storage. When glucose levels in the blood rise, such as after eating, insulin is released to lower those levels.

In addition to its endocrine function (insulin production), the pancreas also has an exocrine function. It produces digestive enzymes that help break down carbohydrates, proteins, and fats in the food we consume, thus aiding in the digestive process. These enzymes are released into the small intestine where they facilitate digestion, allowing nutrients to be absorbed into the bloodstream.

The other options refer to functions associated with different organs: filtering toxins from the blood is primarily the role of the liver, storing bile is a function of the gallbladder, and regulating oxygen levels in the blood is managed by the lungs and cardiovascular system.