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Discussion

A group of three interrelated words is given. Choose a word from the given alternatives, that belongs to same group.

Pituitary: Thyroid: Pancreas

  • A.Adrenal
  • B.Heart
  • C.Liver
  • D.Kidney

Answer: A

The word that belongs to the group is Adrenal.

Pituitary, thyroid and pancreas are all endocrine glands: they secrete hormones directly into the blood (the pancreas through its islets of Langerhans, which make insulin and glucagon). The adrenal glands, above the kidneys, are endocrine glands too, secreting adrenaline and cortisol.

The heart, liver and kidney are organs, not glands of the endocrine system. The liver is the most tempting distractor because it is a large gland, but it is chiefly an exocrine and metabolic organ, not one of the classic hormone-secreting glands.

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