Body system · 6 pieces
Urinary
Kidneys, ureters, bladder and urethra.
Overview
The two kidneys filter about 180 litres of plasma a day, returning almost all of it to the blood and excreting the rest as urine. Urine drains through the ureters into the bladder, a muscular reservoir that empties through the urethra. The kidneys also regulate blood pressure, red cell production and vitamin D activation.
Functions
- Filter waste from the blood
- Balance water, salts and acidity
- Regulate blood pressure
- Store and expel urine
Clinical notes
- Urinary tract infections
- Kidney stones
- Chronic kidney disease and dialysis
Organs & groups in this system
Kidneys
Paired filters that clean the blood and regulate fluid and salts.
Urinary bladder & urethra
The bladder stores urine; the urethra carries it out of the body.
Ureters
Muscular tubes carrying urine from the kidneys to the bladder.
All structures 6
6 modelled pieces. Click a structure to open it in the atlas.