1. The Urinary System

2. Organs of the Urinary System
kidneys
ureters
Organs of the Urinary System
urinary bladder
urethra

3. Urinary System Two Kidneys Two Ureters Urinary Bladder Urethra
Perform all filtering functions except actual excretion.
Two Ureters
Bring urine from Kidneys to Urinary Bladder
Urinary Bladder
Holds Urine until excretion
Can stretch
Urethra
Moves urine from bladder to outside of body

4. Function Kidneys are a blood filter
Remove nitrogenous wastes (urea, uric acid and ammonia)
Maintain electrolyte, acid-base,
Maintain fluid balance of blood (and therefore blood pressure)

6. Over 180 liters (50 gallons) of blood pass through the kidneys every day.
When this blood enters the kidneys it is filtered and returned to the heart via the renal vein.

7. Kidney- External Anatomy
Lateral surface- convex
Medial is concave-
Hilum
Opening to Kidney
Sinus
Space within hilum
Kidneys receive blood vessels and nerves.

8. Kidney Internal Anatomy I
Renal arteries and veins
Bring blood in and out of kidney
Renal cortex
Outer layer of Kidney
Renal medulla
Inner layer of Kidney

9. Kidney Internal Anatomy II
Renal Pyramids
Extensions of ureter
Renal Columns
Space between pyramids within the medula
Renal Papilla
Narrow end of pyramid
Calyx (ces)
Collecting tubes
Renal Pelvis
Collecting vessel prior to ureter