7:12 Urinary System Excretory system Removes certain wastes and excess water from the body Maintains homeostasis Maintains acid-base balance 2 kidneys,

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Presentation transcript:

7:12 Urinary System Excretory system Removes certain wastes and excess water from the body Maintains homeostasis Maintains acid-base balance 2 kidneys, 2 ureters, bladder, and urethra

Kidneys Bean-shaped organs Location Protection Cortex Medulla Hilum Nephrons

Ureters Muscular tubes about 10–12 inches long Extend from renal pelvis of each kidney to bladder Peristalsis moves urine through tube to bladder

Bladder Muscular sac Lined with mucous membranes Three layers of visceral muscle form walls Function Urge to void Circular sphincter muscles

Urethra Carries urine from bladder to the outside Urinary meatus Female and male systems 1.5 inches vs 8 inches Urine Conditions affecting urination

Diseases and Abnormal Conditions Cystitis Glomerulonephritis or nephritis Pyelonephritis Renal calculus or urinary calculus Renal failure Chronic renal failure Uremia Urethritis