Marie Curie. Marie Curie was a physicist and chemist best known for her work on radioactivity; however, she also discovered the elements polonium and radium.
The kidney secretes the hormones renin, calcitriol and erythropoietin. Renin-also known as angiotensinogenase, helps to control the body's blood pressure by regulating the â¦ balance of fluid and electrolytes in the body. Calcitriol-This is a form of Vitamin D which regulates calcium and phosphorous levels in the body.
Thyroid hormones. The thyroid gland contains cells that secrete chemical substances called hormones. The main 2 hormones made by the thyroid gland are called thyroxine (T4) and triiodothyronine (T3), with T4 being produced in much greater quantities than T3. T3, however, is the primary active hormone.