PATHOLOGY

Detailed explanation-1: -b) Glucagon-insulin hormone is an antagonist to glucagon because it reacts opposite to the function of insulin. Insulin role is to maintain the glucose level in the blood stream whereas glucagon hormone is known for raising the concentration of glucose in blood.

Detailed explanation-2: -Calcitonin and PTH are referred to as antagonistic hormones, as their actions are diametrically opposite. While calcitonin is secreted when blood calcium level is extremely high, PTH is secreted when the blood calcium level is too low. Both these hormones are known to regulate the Ca++ levels in blood.

Detailed explanation-3: -Insulin and glucagon are hormones that have antagonistic effects. Both these hormones are created by the beta and the alpha cells of the islets of Langerhans of the pancreas. Both these hormones have an antagonistic nature towards each other.

Detailed explanation-4: -Insulin and glucagon, calcitonin and parathyroid hormone are antagonistic hormones because their actions are completely opposite. Glucagon increases blood glucose level and insulin decrease blood glucose level. Parathyroid hormone increases blood calcium level and calcitonin decrease the blood calcium level.

Detailed explanation-5: -Chemical substances which inhibit the function of the endocrine glands, the biosynthesis of their secreted hormones, or the action of hormones upon their specific sites. For palliative treatment of advanced prostate cancer.