Each kidney has a cap-like yellow adrenal gland. Its other name is suprarenal gland. It consists of two parts. Cortex and medulla. Each gland weighs 3-5 grams.
(i) Glucocorticoid hormone: This hormone regulates sugar metabolism.
(ii) Mineralocorticoid hormone: This hormone metabolizes mineral salts.
(iii) Sex corticoid hormone: It causes genital growth and sexual symptoms.
(iv) Adrenaline hormone: This hormone increases heart rate and helps in times of danger.
(v) Nor-adrenaline hormone: It accelerates the metabolism of phosphorus.
(vi) Epinephrine hormone: It releases glucose from glycogen. Controls cardiac and involuntary muscle contractions.
(vii) Nor-epinephrine hormone: It converts excess glucose into glycogen.