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.
Each kidney in a human contains about a million nephrons. These nephrons make the actual changes to the blood composition.There are two types of nephron: cortical nephron and juxtamedullary nephron. The main difference in the two types of nephron is the length to which the loop of Henle extends into the kidney.Cortical nephron, which are about eighty percent of the nephron in humans, have a loop of Henle that does not extend past the cortex of the kidney.ach kidney in a human contains about a million nephrons. These nephrons make the actual changes to the blood composition.