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Choose true or false. Each right answer scores 1, and each wrong answer scores -1. Not answered questions score 0.
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1) The circulatory system includes the cardiovascular system and lymphatic system.
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2) Lymph flows through the cardiovascular system.
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3) The blood vessel circuit that irrigates the lungs and that irrigating the rest of the body are connected between each other in the lungs.
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4) In a portal system, the blood goes through capillary net - vein - capillary net.
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5) The three layers of an artery are tunica intima, tunica media and tunica adventitia.
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6) Vasa vasorum is a typical capillary net found in the liver.
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7) Arteries drive blood from the organs to the heart.
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8) Arteries show more muscle in the tunica media than veins.
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9) Elastic arteries are middle-size arteries.
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10) Elastic arteries show a thin tunica media.
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11) Muscular arteries show diameters lower than 50 µm.
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12) The number of layers of smooth muscle is lower in arterioles compared with muscular arteries.
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13) Capillaries also have the three typical layers: tunica intima, tunica media and tunica adventitia. |
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14) Fenestrated capillaries consist of an endothelium with perforations that can be freely crossed by blood plasma. |
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15) One feature of veins is a low-developed tunica media. |
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16) Muscular and postcapillary veins show tunica media. |
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17) The heart is made up of smooth muscle cells because heart beating is involuntary. |
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18) Myocardium is the outer layer of the heart. |
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19) The aorta artery gets the blood from the left ventricle. |
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20) The heart valves are also made up of muscle. |
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F-1) Arrows point tho the elastic lamina of the tunica intima.
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F-2) Arrows point to the tunica adventitia of an artery.
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F-3) The numbers indicating capillaries are the 2 and 3.
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