1) What is the function of the left ventricle? a) To pump blood to the body through the aorta. b) To pump blood to the lungs via the aorta. 2) What would happen if the coronary arteries became blocked? a) The area of the heart that the artery supplies might deflate and the veins could explode. b) The area of the heart that the artery supplied would not receive enough oxygen, causing chest pain (angina), or lead to a heart attack (myocardial infarction).. 3) Is it true that the left ventricle has thicker walls than the right ventricle? a) Yes, true. The left ventricle has thicker walls because it has to pump blood with enough force to reach the entire body. The right ventricle only needs to pump blood to the lungs, which are much closer, so its walls are thinner and have a lower workload. b) No, false. The left ventricle does not have thicker walls, the walls are all the same thickness. 4) What are the names of the 3 layers of the heart? a) The inner lining (endocardium), the muscular middle layer (myocardian) and the outer layer (epicardium). b) The inner lining (epocardium), the muscular middle layer (miocardian) and the outer layer (eppicardium). 5) Why is a baby's heart rate so much faster than an adult's? a) They don't move as much as adults. b) To meet the demands of rapid growth. 6) What is the function of the pericardial fluid around the heart? a) To reduce friction, to limit expansion of the chambers, and to protect from infection. b) To keep the heart cool and to protect from infection. 7) Where does the heart sit? a) Behind the sternum, in front of the lungs. b) Behind the sternum, slightly to the left of the body's midline, between the lungs. 8) What do coronary arteries do? a) Coronary arteries supply the heart directly with oxygenated blood. General arteries carry blood away from the heart. b) Coronary arteries branch directly off the aorta, the largest artery in the body. 9) Which side of the heart pumps blood at the highest pressure? a) The left side, specifically the left ventricle. b) The right side, specifically the right ventricle. 10) What do the ventricles do? a) They receive blood from the heart and lungs. b) The ventricles pump out blood to the heart and lungs.

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