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| 1.
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Each kidney is made up of about 1 million filtering units called __________.
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| | A) | capillaries |
| | B) | veins |
| | C) | alveoli |
| | D) | nephrons |
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| 2.
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Your brain can control your breathing rate depending on the amount of __________ present in your blood.
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| | A) | sugar |
| | B) | water |
| | C) | carbon dioxide |
| | D) | oxygen |
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| 3.
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What happens to most of the water, sugar, and salts filtered from the blood in the kidneys?
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| | A) | They are reabsorbed and returned to the blood. |
| | B) | They leave through the digestive system. |
| | C) | They are converted into urine. |
| | D) | They are exhaled from the lungs. |
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| 4.
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Besides the kidney, what other organ also filters blood to remove wastes?
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| | A) | lungs |
| | B) | liver |
| | C) | heart |
| | D) | bladder |
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| 5.
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Which one of the following is a disease of the respiratory system in which alveoli in the lungs enlarge?
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| | A) | lung cancer |
| | B) | emphysema |
| | C) | asthma |
| | D) | chronic bronchitis |
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| 6.
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The __________ system is made up of several different systems that function together to remove wastes from your body
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| | A) | respiratory |
| | B) | urinary |
| | C) | circulatory |
| | D) | excretory |
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| 7.
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Which one of the following problems can occur if someone's kidneys don't work properly?
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| | A) | less oxygen enters the capillaries |
| | B) | an imbalance of salts |
| | C) | few if any problems would occur |
| | D) | an increase of carbon dioxide in the blood |
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| 8.
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What area of the brain constantly monitors the amount of water in the blood?
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| | A) | kidney |
| | B) | hypothalamus |
| | C) | nephron |
| | D) | bladder |
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| 9.
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Inhaling the tar in __________ is the greatest contributing factor to lung cancer.
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| | A) | polluted air |
| | B) | coal dust |
| | C) | asbestos |
| | D) | cigarette smoke |
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| 10.
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The liquid left behind in the nephron following filtration is called __________.
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| | A) | sugar |
| | B) | salt |
| | C) | urine |
| | D) | blood |
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| 11.
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The urinary system is important in regulating __________ in the body.
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| | A) | fluid levels |
| | B) | waste gases |
| | C) | undigested material |
| | D) | oxygen |
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| 12.
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Which of the following is a method used to save the life of a choking victim?
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| | A) | emphysema |
| | B) | bronchitis |
| | C) | respiration |
| | D) | abdominal thrusts |
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| 13.
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When you swallow, the epiglottis prevents __________.
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| | A) | food or liquid from entering your airway |
| | B) | air from entering your lungs |
| | C) | carbon dioxide from entering your lungs |
| | D) | dust and bacteria from entering your airway |
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| 14.
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The __________ is a tubelike passageway used by food, liquid, and air.
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| | A) | nostril |
| | B) | larynx |
| | C) | pharynx |
| | D) | epiglottis |
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| 15.
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Some early experiments showed that a mouse could live in a container in which a plant had first been grown. What did the plant produce that the mouse needed?
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| | A) | carbon dioxide |
| | B) | oxygen |
| | C) | food |
| | D) | water vapor |
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| 16.
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What is the function of cilia that line the nasal cavity?
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| | A) | produce sticky mucus |
| | B) | moisten the air taken in |
| | C) | trap dust from the air |
| | D) | sweep away mucus and trapped materials |
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| 17.
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Which one of the following is a lung disorder that occurs when the bronchial tubes contract quickly?
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| | A) | emphysema |
| | B) | chronic bronchitis |
| | C) | asthma |
| | D) | common cold |
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| 18.
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During dialysis an artificial kidney machine is used to __________.
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| | A) | increase lung pressure |
| | B) | produce bile |
| | C) | remove wastes from blood |
| | D) | pump blood through the heart |
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| 19.
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Which one of the following is the correct pathway of air after it enters the nasal passages?
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| | A) | lungs, bronchi, trachea, larynx, pharynx |
| | B) | larynx, pharynx, bronchi, trachea, lungs |
| | C) | pharynx, larynx, trachea, bronchi, lungs |
| | D) | larynx, trachea, pharynx, bronchi, lungs |
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| 20.
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The exchange of oxygen and carbon dioxide in the lungs takes place between the __________.
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| | A) | pharynx and lungs |
| | B) | bronchi and bronchiles |
| | C) | nostrils and lungs |
| | D) | alveoli and capillaries |
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