Download Urinary System

Urinary System
Parts:
•
•
•
•
Kidney
Ureters
Bladder
Urethra
Kidney:
• Cattle and poultry are
composed of various
lobes or parts
• Horse’s right kidney is
heart shaped and left
kidney is bean
shaped (picture)
• Sheep and swine are
both bean shaped
Renal Cortex:
• Outer tissue layer of the kidney
Renal Artery:
• Conveys blood to the kidney
Renal Medulla:
• Inner portion of the kidney
How it works:
• Blood filters from the capillaries into the
blind sac of the urinary tubules
• Urinary tubules network together and form
larger tubules toward the center of the
kidney where urine containing body
wastes is collected
Kidney Functions:
• Filter waste from the blood
• Regulates blood composition
• Maintain normal internal life support
conditions
Ureters:
• Tubules connecting
the kidneys with the
bladder
• Transport urine from
kidney to the bladder
Bladder:
• Expandable sac
• Stores urine until urinated out of the body
• Fetal Pig Bladder below
Urethra:
• Passes urine from the bladder through this
elastic tube.
• In the penis of males
• Connected to the vagina in females
Poultry:
• Have no bladder
• Urine is transported by the ureters to the
cloaca where it is excreted with feces
• No liquid is excreted
Uric Acid:
• White material in
droppings
• Urinary excretions