(Greek: to secrete, to come out; such as, a certain gland or glands)
2. Pertaining to an endocrine gland or its secretion.
Apocrine glands are restricted in men to hairy regions of the body, and are lined by a single layer of tall columnar cells with acidophile cytoplasm (thriving in a relatively acid environment).
2. Any dysfunction of the endocrine system.
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.
2. A medically qualified specialist in internal medicine who has subspecialised in the diseases of glandular organs.
2. The study of hormones, their receptors, the intracellular signalling pathways they invoke, and the diseases and conditions associated with them.