The urinary system

Question 1

What are the 4 main parts of the urinary system and their locations?

Answer 1

Kidney (posterior to T12-L3)
Ureter (joins kidneys and bladder)
Bladder (posterior to pubic symphysis)
Urethra (tube to excrete urine)

Question 2

What’s the three main kidney structures?

Answer 2

Renal cortex
Medulla
Pyramids

Question 3

Describe the process of blood filtration

Answer 3

Occurs in nephrons

1. In the renal capsule, a bundle of blood vessels is surrounded by a glomerular capsule. Both are porous so substances move freely between the two.
2. In the renal tubule, some useful substances are reabsorbed to the blood vessels
3. In the renal tubule, more waste products leave the blood