ANATOMY OF THE KIDNEYS: STRUCTURAL ORGANIZATION, PHYSIOLOGICAL FUNCTIONS, AND CLINICAL SIGNIFICANCE
Abstract
The kidneys are paired retroperitoneal organs that play a fundamental role in maintaining internal homeostasis. They regulate electrolyte balance, excrete metabolic waste products, control blood pressure, and produce hormones essential for erythropoiesis and mineral metabolism. Structurally, each kidney consists of the renal cortex, renal medulla, and collecting system, which together support the processes of filtration, reabsorption, and secretion. The functional units of the kidney are nephrons, with each kidney containing approximately one to one and a half million nephrons. This article reviews the anatomical structure of the kidneys, their embryological development, vascular supply, neural innervation, physiological functions, and clinical significance. Understanding renal anatomy is essential for accurate diagnosis and effective management of renal diseases, as well as for planning surgical interventions such as nephrectomy and renal transplantation.
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