Quiz: What Makes You Tick? Heart Facts
From heartbeats to pacemakers, here's lot of cardiac trivia. Take this WebMD heart quiz to see how much you know about the organ that makes you tick.
Quiz: What Do You Know About Blood Thinners?
Test your knowledge with this WebMD quiz about blood thinners, including how they work, their side effects, and what's safe to do and what's not when you take them.