1. Urinary system organs:
- 2 kidneys (T12-L3)
- 2 ureters, connect kidneys to bladder
- urinary bladder
- urethra
Kidneys:
- control blood composition
filter blood 60 times/day
180 L (45 gal) of filtrate formed daily
1.5 L eliminated as urine
- help regulate BP by secreting renin
- gluconeogenesis
- erythropoiesis

2. Protective coverings of kidneys (deep to superficial):
- renal capsule
- adipose capsule
- renal fascia

3. Nephrons = functional unit of kidneys
Tubules

4. 1. Cortical Nephron

5. 2. Juxtamedullary Nephron

6. Renal corpuscle = glomerular capsule and glomerulus (blood capillary), filtration site
a. parietal layer - outer covering
b. capsular space - separates parietal and visceral
c. visceral layer - Podocytes
Endothelial capsular membrane (filtering membrane) = visceral layer of capsule + endothelium of glomerulus.