To answer thequestion of "If blood circulates through its whole body how can it have different colors?"


After blood enters the heart it goes into the r. atrium then the r. ventrical. From there it goes to the lungs to get replenished with oxygen. Then back into the heart (L. atrium). then L. vent. From the L. vent it goes through out the body dispersing the oxygen and other nutrients. Blood from the intestine and other places (spleen) goes to the liver to be filtered before it finally gets back to the heart. So the Liver hits are darker b/c they have a minimal amount of oxygen and the lung shots are pink b/c of the high oxygen content.

Hope this helps, --Millpond