Pituitary may be considered as the coordinator of endocrine orchestra but not master endocrine gland.

Explanation

(1) The pituitary gland was formerly considered as a master endocrine gland, because all other endocrine glands are under the control of pituitary hormones.
(2) But now it is known that the pituitary gland itself is under the control of hypothalamus through hypothalamo-hypophysial axis.
(3) Through various releasing factors and release inhibiting factors the secretions of pituitary are regulated by hypothalamus.
(4) Pituitary in turn controls growth, secretions and maintenance of glands such as adrenal cortex, thyroid and gonads.