IMG_5128

8. A dysfunction in the papillary muscles of the heart can cause a failure of the to fully .(AV = atrioventricular, SL = semi-lunar) A. AV valves; open B. AV valves; close C. SL valves; close D. SL valves; open 9. Which type of capillary is found in locations where a high volume of fluid and solute exchange occurs? A. fenestrated B. continuous C. sinusoid D. thoroughfare 10. In a fetus, the ductus arteriosus allows blood to flow directly fromthe _ tothe . A. left atrium; right atrium B. aorta; pulmonary trunk C. pulmonary trunk; aorta D. right atrium; left atrium 11. Pulmonary arteries carry blood to the A. deoxygenated; lungs B. deoxygenated; body tissues C. oxygenated; lungs D. oxygenated; body tissues 12. Which of the following is proportional to arterial pressure? A. Afterload B. Preload C. End-diastolic volume (EDV) D. End-systolic volume (ESV) 13. At the distal end of the capillary bed, fluid moves from the intothe . A. interstitial fluid; capillaries B. capillaries; interstitial fluid C. veins; arteries D. arteries; veins 14. As the diameter of blood vessels increase in size, which of the following parameters is also increased? A. the speed of blood flow within them. B. the distance away from the heart. C. the blood pressure within them. D. their combined cross sectional area. 15. Which of the following is TRUE of the cardioaccelerator regions of the cardiovascular centers? A. they are part of the parasympathetic division of the autonomic nervous system B. they provide abundant innervation to ventricles C. they are the dominant controller at rest D. they decrease both heart rate and cardiac contractility