Examples are tear glands, salivary glands, and sweat glands.
The pancreas is both an exocrine and an endocrine gland. Its exocrine function is to secrete pancreatic juice through the pancreatic ducts into the small intestines where it plays an important role in the digestion of food. The endocrine function of the pancreas includes the secretion of insulin and glucagon into the bloodstream to help regulate blood sugar levels and carbohydrate metabolism. In this lesson we are mainly concerned with the endocrine glands so the remainder of this lesson will be limited to the discussion of the endocrine system. The chemicals secreted by endocrine glands into the general circulation are called. . .