Urinary System.

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Presentation transcript:

Urinary System

Organs Kidney Ureters Urinary Bladder Urethra

Functions of the Urinary System Regulation of internal environment composition Excretion of certain waste products

Kidney Capsule Cortex Medulla Pyramids Columns Calyces Pelvis

Functional Unit of Kidney: Nephron

http://www.physiology.wisc.edu/phys335/renal_4-4.swf

Ureter from the renal pelvis to the urinary bladder retroperitoneal lined with transitional epithelium longitudinal and circular smooth muscle layers

Urinary bladder lined with transitional epithelium lining thrown into rugae within bladder wall: the detrusor muscle trigone: funnels urine into urethra

Urethra from urinary bladder to outside lined with stratified epithelium

Path of Urine Flow

Urethral Sphincters Internal: smooth muscle External: skeletal muscle

Micturition