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1 
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is the largest artery in the human body 
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2 
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are blood vessels that carry blood towards the heart.  
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4 
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 is a part of the electrical control system of the heart that coordinates the top of the heart. 
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5 
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is on the right dorsal side of the mammalian heart, between the right atrium and the right ventricle 
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6 
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 is the period of time when the heart refills with blood after systole  
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7 
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is a very small blood vessel in the microcirculation that allows blood to return from the capillary beds to the larger blood vessels called veins. 
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9 
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are blood vessels that carry blood away from the heart. 
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10 
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is a wall, dividing a cavity or structure into smaller ones. 
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15 
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is a small diameter blood vessel in the microcirculation that extends and branches out from an artery and leads to capillaries. 
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16 
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the term is used for a portion of the lateral ventricle in the brain and the blood collection chamber of the heart. 
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17 
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valves are the most common cardiac valvular anomaly, occurring in 1- 2% of the general population. 
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18 
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The rhythmic contraction of the heart, especially of the ventricles, by which blood is driven through the aorta and pulmonary artery after each dilation or diastole. 
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19 
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 represents the tactile arterial palpation of the heartbeat by trained fingertips. 
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