Evolution of the Kidney-Juniper publishers
JUNIPER PUBLISHERS-OPEN ACCESS ANATOMY PHYSIOLOGY & BIOCHEMISTRY INTERNATIONAL JOURNAL Aim of the work: This article will elucidate the extraordinary parallels between the evolution of the kidney from provertebrates to man. In invertebrates, the excretory structures are classified into three types included contractile vacuoles in protozoa, nephridia (flame cell system) in most invertebrate animals and Malpighian tubules (arthropod kidney) in insects. While, in vertebrates, there are three distinct excretory organs formed in succession during the development of the vertebrate kidney, they are called pronephros, mesonephros and metanephros. Conclusion: From this review, it can be concluded that the important factors in the evolution of the basic structure and function of the vertebrate kidney appeared associating with body fluid– regulation, involving the maintenance of a constant water and salt content of the body. As the evolution of the vertebrate kidney i...