adrenal gland, adrenal, suprarenal gland

either of a pair of complex endocrine glands situated near the kidney

• endocrine gland, ductless gland — any of the glands of the endocrine system that secrete hormones directly into the bloodstream

• adrenal cortex — the cortex of the adrenal gland; secretes corticosterone and sex hormones
• adrenal medulla — the medulla of the adrenal gland; secretes epinephrine

• kidney — either of two bean-shaped excretory organs that filter wastes (especially urea) from the blood and excrete them and water in urine; urine passes out of the kidney through ureters to the bladder