Memory Circulatory Story VocabularyVersion en ligne In this game, you will have to match the word to its definition. These word are from the our story, The Circulatory Story. par Whitney Gurrola Pericardium Circulatory Cell A part of a larger object or system Transport Hemoglobin The liquid part of blood; 90% of plasma is water. Plasma The smallest, functioning unit of a living organism. Related to the circulation of blood. Component A protective sac that encloses the heart. A protein found in red blood cells that transport, or carries oxygen. To carry something one place to another.