16. Which of the following parts of the human heart contains oxygenated blood?
A. right atrium C. left atrium
B. right ventricle D. pulmonary artery
17. Which of the following series represents the correct path of blood circulation?
A. right atrium, left atrium, lungs, right ventricle, left ventricle
B. right atrium, right ventricle, lungs, left atrium, left ventricle
C. lungs, right atrium, left atrium, right ventricle, left ventricle
D. right ventricle, left atrium, right atrium, left ventricle, lungs
18.. Once the blood move from atria down to ventricles, there are openings that let the blood pass through and close, so the blood cannot flow backwards into the atria. What do you call these openings?
A. septa C. capillaries
B. valves D. aorta
19. What happens to deoxygenated blood when it exits the right ventricle of the heart?
A. The heart pumps it out of the right ventricle and move into the pulmonary arteries to begin pulmonary circulation.
B. It moves to the left ventricle of the heart.
C. The right ventricle pumps the deoxygenated blood to the aorta which will distribute to all parts of the body.
D. The heart pumps it out of the right ventricle and move into the left atrium.
20. How are arteries different from veins?
A. Arteries pump blood away from the heart; veins deliver and absorb oxygen, nutrients, and other substances.
B. Arteries transport blood away from the heart; veins return blood back toward the heart.
C. Arteries produce blood; veins collect oxygen from the blood.
D. Arteries carry deoxygenated blood, veins carry oxygenated blood.
21. After exercise, you have likely noticed that your heart beats more quickly
than normal. Why is it happen?
A. Your muscles need extra oxygen thus heart starts to pump harder and faster to circulate blood to deliver oxygen to your muscles.
B. Deoxygenated blood filled the heart thus makes the heart rate faster.
C. Your lungs received more carbon dioxide after exercise.
D. Pulmonary circulation happens during physical activity thus makes your heart rate faster.
22. Which of the given parts carries materials throughout the body?
A. blood C. blood vessels
B. heart D. lungs
23. How do the heart and lungs work together?
A. The heart pumps blood filled with nutrients through all parts of your body, the lungs clean the blood, removing waste products and oxygen.
B. The heart and lungs work together to get oxygen, circulate it to cells throughout the body, collect carbon dioxide from cells throughout the body and get rid of them.
C..The lungs carry carbon dioxide to the heart; heart pumps the carbon.dioxide to make it oxygen and delivers through the cells
D..The heart and lungs work together to produce blood and oxygen, circulate it to cells throughout the body.
 24.. What type of circulation involves in carrying deoxygenated blood away from the right ventricle, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart?
A. Systemic circulation C. Convalescent circulation
B. Coronary circulation D. Pulmonary circulation
25. Which of the following parts carries the blood throughout the body?
A. blood C. blood vessels
B. heart D. lungs








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