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the structure that separates the right ventricle from the pulmonary artery. It prevents the blood from flowing from the pulmonary artery back into the left ventricle during the general diastole phase of the cardiac cycle.
an area of land which is usually covered with shallow water, and which supports plants adapted...
a molecule formed during glycolysis by the breakdown of glucose.
a small body of modified cardiac muscle cells in the upper right corner of the wall of the right...
energy resources (coal, crude oil and natural gas) derived from the fossilised remains of plants...