Endocrinology is a branch of medicine dealing with the endocrine system, its diseases, and its specific secretions known as hormones. Endocrine organs include the thyroid, parathyroid and adrenal glnad.
The endocrine system consists of several glands, all in different parts of the body, that secrete hormones directly into the blood rather than into a duct system. Therefore, endocrine glands are regarded as ductless glands.
