(anatomy) Any of several coiled, tubular glands that extrudes part of the cytoplasm as a secretion.

(anatomy, neuroanatomy) A small, pinecone-shaped endocrine gland found near the centre of the brain that produces melatonin.

(anatomy) Any one of four endocrine glands situated in the neck, usually within a thyroid gland, which produce parathyroid hormone.

(anatomy) Any of various glands that secrete hormones directly into the blood or lymph and not through a duct.

(anatomy) An endocrine gland, about the size of a pea, that sits in a small, bony cavity at the base of the brain whose secretions control the other endocrine glands and influence growth, metabolism, and maturation.

(anatomy) A gland in male mammals surrounding the urethra just below the urinary bladder that controls the release of urine from the bladder and produces a secretion that is the fluid part of semen.

(anatomy) A gland of the skin which secretes an oily substance, sebum, usually into a hair follicle near the surface of the skin.

(anatomy) Any of various glands which secrete via a duct, typically into the digestive tract or onto the skin.

(anatomy) A large butterfly-shaped endocrine gland situated on the front of the neck that produces various hormones.

(anatomy) In mammals, either of a pair of complex endocrine glands, situated above each kidney, secreting hormones which control the heart rate, blood pressure, and metabolism.