1. Urinary System

2. Organs
Kidney
Ureters
Urinary Bladder
Urethra

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

4. Kidney
Capsule
Cortex
Medulla
Pyramids
Columns
Calyces
Pelvis

7. Functional Unit of Kidney:
Nephron

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

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

13. Urethra
from urinary bladder to outside
lined with stratified epithelium

16. Path of Urine Flow

17. Urethral Sphincters
Internal: smooth muscle
External: skeletal muscle

20. Micturition