1) What are the microscopic filters in the kidneys? a) alveoli b) nephrons c) ureters d) arteries e) capillaries 2) What organ breaks down toxins in the bloodstream? a) heart b) lungs c) liver d) kidneys 3) What key words explain the function of the excretory system? a) food breakdown b) oxygen transport c) movement d) waste removal 4) Which organ in the Excretory System stores URINE until the body is ready to get rid of it? a) liver b) bladder c) kidney d) urethra 5) Which organ gets rid of water and some chemical wastes in perspiration (sweat)? a) skin b) liver c) kidney d) lungs 6) Which organ removes CO2 waste? a) kidneys b) lungs c) liver d) stomach 7) What term describes the process in which oxygen and glucose combine to release energy inside body cells? a) excretion b) homeostasis c) cellular respiration d) metabolism 8) Organs of the excretory system that work to maintain homeostasis include the kidneys, lungs, skin, and... a) heart b) small intestine c) diaphragm d) liver 9) Using the picture, what is the function of structure B? a) Carries urine away from the kidneys b) Stores urine c) Eliminates urea, excess water, and some other materials d) Carries urine away from body and eliminates it 10) If the body did not have organs that EXCRETE, what would happen? a) starvation b) death c) fainting d) dizziness

Excretory System

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