1) What is the main function of the excretory system? a) To help us breathe b) To help us digest food c) To remove waste products from the body 2) Which of the following is NOT a part of the excretory system? a) Kidneys b) Lungs c) Stomach 3) What is the primary waste product excreted by the excretory system? a) Carbon dioxide b) Water c) Urea 4) Which organ filters waste products from the blood and produces urine? a) Liver b) Kidneys c) Heart 5) What is the tube that carries urine from the kidneys to the bladder called? a) Ureter b) Urethra c) Esophagus 6) Which of the following is NOT a function of the excretory system? a) Regulating water balance in the body b) Controlling blood sugar levels c) Removing toxins from the body 7) What is the muscular sac that stores urine called? a) Kidney b) Bladder c) Liver 8) How does the excretory system help regulate water balance in the body? a) By producing sweat b) By filtering blood c) By reabsorbing water from urine 9) Which of the following is a waste product excreted through the skin? a) Carbon dioxide b) Urea c) Water 10) What can happen if the excretory system is not functioning properly? a) Hydration b) Kidney stones c) Urinary tract infections

The Excretory System

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