1. Also known as the urinary system.
Excretory System
Also known as the urinary system.

2. I. Organs A. Kidneys- retroperitoneal (behind the peritoneum)
B. Bladder- reservoir for urine, rugae allow expansion.
C. Ureters- tubes that convey urine from the kidneys to the bladder.
D. Urethra- tube that conveys urine from the bladder to the outside of the body.

3. Structures of urinary tract

4. II. Structure of the kidneys
A. Renal cortex- outer portion of the kidneys where the nephrons are located.
B. Renal medulla- composed of pyramids, cone shaped funnels.
C. Renal pelvis- funnel shaped sac with calyces. These direct urine from all areas of the kidneys.

5. Detail of kidney

6. D. Nephron- the functional unit
1. Renal corpuscle-
a. glomerulus- network of capillaries that surround the…
b. Capsule of Bowman- selective filtration occurs.
2. Renal tubule-
a. proximal convoluted tubule.
b. loop of Henle
c. distal convoluted tubule

7. Glomerulus

8. Renal tubule

9. III. Physiology of the kidneys
A. Glomerulus- water and true solutes are filtered out of the blood and returned to the body.
B. Tubular reabsorption- occurs in renal tubules. A counter current mechanism allows waste materials to be removed while substances needed by the body are retained.

10. Nephron

11. IV. Medical problems B. Hematuria- blood in the urine.
A. Diuresis- increased secretion of urine.
B. Hematuria- blood in the urine.
C. Hemodialysis- artificial kidney.

12. Artificial kidney

13. Get Smart Body.com
KIDNEY TUTORIALS FOUND ON WEBSITE ARE:
GROSS EXTERNAL ANATOMY
GROSSS INTERNAL ANATOMY
HISTOLOGY OF THE CORTEX REGION
HISTOLOGY OF THE MEDULLA REGION