Pierre and Marie Curie are best known for their pioneering work in the study of radioactivity, which led to their discovery in 1898 of the elements radium and polonium. Marie Curie, b.
Its functions are vital to life and are regulated by the endocrine system by hormones such as antidiuretic hormone, aldosterone, and parathyroid hormone. In humans, a normal kidney contains 800,000 to 1.5 million nephrons.
The kidney is a complex organ made of thousands of tiny units called nephrons. Nephrons are the basic functional and structural unit of the kidney. The mammalian kidneys have two types of nephrons, namely, juxtamedullary nephron and cortical nephron.