Zoology - Chemical Coordination and Integration Question with Solution | TestHub

Progesterone and Oestrogen are secreted by ovaries and play a major role in the development of the female reproductive system. Thyroxine and calcitonin are secreted by the thyroid gland. Thyroxine plays an important role in the regulation of various organs of the body whereas calcitonin plays a major role in blood calcium level regulation. Somatotropin (growth hormone) and prolactin are secreted by the anterior pituitary gland. Insulin and Glucagon are secreted by the pancreas and play a major role in the regulation of blood glucose levels. Somatostatin is also secreted by the pancreas (delta cells of islets of Langerhans) has acted as a regulating hormone that regulates the levels of both insulin and glucagon. It is also secreted by the hypothalamus.