capillary nets. B. Almost all capillaries are open at the same time. C. The only

Question

capillary nets. B. Almost all capillaries are open at the same time. C. The only site of nutrient, gas exchange, and waste exchange is the capillaries. D. Pre-capillary sphincters contract to increase capillary flow. E. The walls of capillaries contain smooth muscle. 11 At any one time, where is the majority of the blood found in the body? A. veins B. lungs C. lymphatic vessels D. capillaries E. arteries 12- Dr. Malik explained that in a condition known as situs inversus, the internal organs are reversed in their orientation. Thus, the apex of the heart would be oriented to theA. middle B. right C. left D. front E. back 13- valves D. ventricles E. septa 14 What type of cell junctions are found in cardiac muscle tissue? A. atria and auricles B. septae and chordae C. intercalated disks D. myocardium and pericardium E. gap junctions and desmosomes 15- The right ventricle is to the pulmonary trunk as the left ventricle is to the A. aorta B. superior vena cava C. left pulmonary vein D. inferior vena cava E. left common carotid artery 16 During open heart surgery, the first heart structure that would be cut into is the A. myocardium B. left ventricle C. pericardium D. right ventricle E. left atrium 17 A hospital laboratory technician injects a dye into a vein in your right arm. What is the first chamber of the heart that the dye will reach? A. nght atrium B. left atrium C. right ventricle D. left ventricle E. aorta 18 If the semilunar valve was blocked, where would blood accumulate? A. lungs B. right atrium C. left atrium D. right ventricle E. left ventricle

Explanation / Answer

11. A. veins

12. B. right

13. A. atria

14. E. gap junctions and desmosomes

15. A. aorta

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