which is the master endocrine gland
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pitutary
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liver
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pancreas
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salivary
The pituitary gland is called the 'master gland' because it secretes hormones that regulate other endocrine glands, including the thyroid, adrenal glands, and reproductive glands. The liver produces bile and metabolizes nutrients, the pancreas produces digestive enzymes and insulin, and salivary glands produce saliva.
The pituitary gland is called the 'master gland' of the endocrine system because it secretes hormones (like TSH, ACTH, LH, FSH, growth hormone) that regulate the activity of most other endocrine glands, including the thyroid, adrenal glands, and gonads. The liver is a metabolic/detox organ (not primarily endocrine in this sense), the pancreas secretes insulin/glucagon but doesn't control other glands, and the salivary glands are exocrine, not endocrine at all.