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Excretory System Questions Question 1 : What is the main function of the Excretory System? A: to excrete saliva B: get rid of waste products from your cells C: break down food for digestion D: circulate oxygen Question 2 : What is an example of a waste product? A: extra water and salts B: unhealthy foods C: fruits and vegetables D: pizza and lasagna Question 3 : Which of the following is NOT an organ of the excretory system? A: liver B: kidneys C: skin D: heart Question 4 : The ____________ filters wastes from the blood. A: heart B: kidneys C: liver D: stomach Question 5 : Where does urine flow? A: from the stomach to the liver B: from the kidney to the bladder C: from the bladder to the kidney Question 6 : Where does the urine get stored before it is pushed out of the body? A: bladder B: liver C: stomach D: kidney Question 7 : When does the skin take part in excretion? A: all the time B: never C: when a person sweats D: when a person sleeps Question 8 : What makes up sweat? A: water B: water and minerals the body does not need C: water and minerals the body needs Question 9 : How many kidneys does the human body have? A: 1 B: 2 C: 3 D: 4 Question 10 : How does sweating help the human body? A: it cools the body B: it warms the body C: it makes the body feel comfortable
