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.
Hormones are secreted from the endocrine glands in the body. 1  The glands are ductless, so hormones are secreted directly into the blood stream rather than by way of ducts. Some of the major endocrine glands in the body include: 2  Pituitary gland. 3  Pineal gland. 4  Thymus. 5  Thyroid. 6  Adrenal glands. 7  Pancreas. 8  Testes. 9  Ovaries.