Question

Which one of the following pairs includes only endocrine glands?

• A. Thymus and testes
• B. Adrenal and ovary
• C. Parathyroid and adrenal
• D. Pancreas and parathyroid

Answer 1

Answer: (C)

Parathyroid and adrenal

Endocrine glands are ductless glands that secrete their products directly into the bloodstream from where they are carried to their target organs and cause changes in their functioning and regulation. Parathyroid gland is present on posterior surface of lobes of thyroid gland and secretes parathormone which increases calcium level in blood. Adrenal glands are located on upper surface of kidneys. They consist of adrenal cortex secreting corticoid hormones and adrenal medulla secreting adrenaline and noradrenaline. Both parathyroid and adrenal gland are endocrine glands.

So, the correct answer is 'Parathyroid and adrenal'.