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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.
the clear colourless fluid that occurs in the spaces, such as the ventricles and central canal,...
the dramatic increase in the human population growth rate over the past two centuries.
a small finger-like projection found on the inner folds of the small intestine, which increases...
small units of DNA that contain hereditary information that is passed from one generation to the...