(a) Pituitary Hypothalamus gland present in brain releases hormones that regulate the secretion of pituitary glands.
(b) Pancreas It is a digestive gland as well as it secretes the pancreatic juice for digestion of food. It also secretes hormones as insulin.
(c) Adrenal Adrenal glands are located on the top of two kidneys.
(d) Testes These are the glands which are present only in males and secretes male sex hormone, testosterone.