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NAME_____________________________ Anatomy I Homework #4 1. The bicuspid valve __________________. a. b. c. d. is located on the left side of the heart guards the auricles of the heart guards the entrance to the aorta guards the entrance to the pulmonary trunk 2. Freshly oxygenated blood enters the heart through the _____, and is pumped out the ________. a. b. c. d. right atrium; aorta left atrium; aorta right ventricle; pulmonary arteries left ventricle; pulmonary arteries 3. A deep wound to the upper thigh might damage the _____________ artery. a. b. c. d. femoral popliteal anterior tibial peroneal 4. How many openings are there in the right atrium? a. b. c. d. 1 2 3 4 5. The _____ valve lies between the right atrium and right ventricle. a. b. c. d. bicuspid aortic semilunar pulmonary semilunar tricuspid 6. The pulmonary semilunar valve prevents a back-flow of blood into the _____. a. b. c. d. pulmonary artery right ventricle left ventricle right atrium 7. The aortic semilunar valve prevents blood from returning to the _____. a. b. c. d. left ventricle aorta right ventricle left atrium 8. Which structure contains the lowest amount of oxygen? a. b. c. d. pulmonary vein aorta vena cava left ventricle 9. A heartbeat of less than 60 beats per minute is called _____ a. b. c. d. tachycardia bradycardia arrhythmia fibrillation 10. Blood is drained from the face, scalp, and superficial regions of the neck by the _______________. a. b. c. d. carotid arteries external jugular veins internal jugular veins brachiocephalic veins