Human Heart Diagram Without Labels. heart diagram without labels. heart diagram without labels. zimv20. Jul 12, 01:42 AM. Originally posted by FredAkbarNumber 41Apr 21, 05:19 PMNo one is going to write an iPhone 5 (fifth gen hardware) app? You're just like the people who thought "No one is going to write retina display apps, most people have the old phones." Now if you don't support the retina