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 Related to the circulation of blood. Cell Circulatory Component Hemoglobin Transport The smallest, functioning unit of a living organism. Plasma A protective sac that encloses the heart. A part of a larger object or system To carry something one place to another. The liquid part of blood; 90% of plasma is water. A protein found in red blood cells that transport, or carries oxygen.