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Anatomy of the Urinary System

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1 Anatomy of the Urinary System
Kidneys (urine formation) Lower Urinary Tract Ureters (2) Bladder (1) Urethra (1) (urine collection, storage, excretion)

2 (with calyces forming the medulary pyramids)
Cortex Glomeruli Medulla Renal tubules (with calyces forming the medulary pyramids) Ureter Takes urine to bladder Blood carried to the kidney by the renal artery and taken away by the renal vein. Cortex Medulla Renal hilum Renal artery Renal vein Renal pelvis Ureter

3 Each KIDNEY consists of 1 million NEPHRONS
Each nephron consists of a: GLOMERULUS (found in cortex) forms a protein-free filtrate from blood TUBULE (found in medulla) processes the filtrate to form urine Each TUBULE consists of several segments: Proximal tubule Loop of Henle Distal Tubule Collecting Ducts

4 Functional Unit of the Kidney is the NEPHRON
Glomerulus Proximal Tubule Loop of Henle Distal Tubule Collecting Duct

5 Kidney Functions Regulation of water, electrolyte balance, pH
Removal of waste from blood and excretion of urine Secretion of hormones: Erythropoietin (EPO) Renin Vitamin D3

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