Question

Which one of the following pairs of organs includes only the endocrine glands?

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

Answer 1

The correct option is C Parathyroid and adrenal

Hormones are secreted by the endocrine system. Endocrine glands do not have ducts. Their secretions (hormones) are secreted into the bloodstream. Discrete endocrine glands - these include the pituitary (hypophysis), thyroid, parathyroid, adrenal and pineal glands. Endocrine component of glands with both an endocrine and an exocrine function- these include the kidney, pancreas and gonads.

So, the correct answer is 'Parathyroid and adrenal'