Chapter 17. The Urinary system. k idneys. Location The right kidney touches the liver and is lower than the left kidney. Protected partially by the lower ribs and by the muscles of the lower back. About 20% of the blood pumped by the heart each minute enters the kidneys. kidneys.
1. Filters blood and produces urine.
- excretes toxins and waste products
2. Regulates levels of many chemical substances in the blood such as chloride, sodium, potassium, and bicarbonate.
3. Regulate proper balance between water and salt in the blood.
4. Help with blood pressure regulation
5. Help maintain adequate RBC numbers