endo-, end-

1. A reference to hormones and the glands that make and secrete them into the bloodstream through which they travel to affect distant organs.
2. Any of the glands of the endocrine system that secrete hormones directly into the bloodstream.
3. The secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect.

The endocrine sites include the hypothalamus, pituitary gland, pineal gland, thyroid, parathyroids, heart (which makes atrial-natriuretic peptide), the stomach and intestines, islets of Langerhans in the pancreas, the adrenal glands, the kidney (which makes renin, erythropoietin, and calcitriol), fat cells (which make leptin).

Endocrine is as opposed to exocrine. The exocrine glands include the salivary glands, sweat glands and glands within the gastrointestinal tract.

1. A physician who specializes in the diagnosis and treatment of conditions affecting the endocrine system.
2. A medically qualified specialist in internal medicine who has subspecialised in the diseases of glandular organs.

1. The branch of biology dealing with the endocrine glands and their secretions; especially, in relation to their processes or functions.
2. The study of hormones, their receptors, the intracellular signalling pathways they invoke, and the diseases and conditions associated with them.

A functional disorder of an endocrsine gland and the consequences thereof: Endocrinopathy is a disease of an endocrine gland which involves the hormones of a living being.

Treatment of disease by the administration of extracts of endocrine glands.

The inner layer of the procuticle in certain crustaceans and arthropods, which is almost entirely composed of protein and chitin.

1. A branch of dentistry which deals with diseases of teeth roots, dental pulp, and surrounding tissue.
2. A branch of dentistry that treats diseases and injuries affecting the root tips or nerves of teeth and treatments of the root canals are common procedures for successful dental therapy.