The iconic symbol of love looks nothing like the human ... heart has four chambers that pump oxygen-rich blood in and out. Fourteenth-century scientists depicted this ancient observation by ...

This is his drawing of the female anatomy ... but what fired his interest in the workings of the human body? A Leonardo diagram showing the heart and its blood vessels, with his mirror writing ...

They found this branching, snowflaky muscle layer plays a part in the risk of heart disease. You love the badass human body ... imagery and to begin to draw conclusions about what the ...