endocrine glands

DUCTLESS GLANDS that produce HORMONES for secretion directly into the bloodstream (or lymph). Some organs, e.g. the PANCREAS , also release secretions via a DUCT . In addition to the pancreas, the major endocrine glands are the THYROID , PITUITARY , PARATHYROID , OVARY and TESTIS . Imbalances in the secretions of endocrine glands produce a variety of diseases (see individual entries).