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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 blood vessel that carries blood from the liver to the inferior vena cava.
(also called egestion or elimination) the process of passing faeces out through the anus.
an eating disorder in which sufferers consume an excessive amount of food in a short time, and...
single-celled brown algae found in fresh water and seawater. They have hard, shell-like cell...
a kingdom of very small, single-celled organisms without a nucleus. They reproduce asexually by...