The human heart is a finely-tuned instrument that serves the whole body. It is a muscular organ around the size of a closed fist, and it sits in the chest, slightly to the left of center.

The first thing you notice about Glenna Gordon’s book Diagram of the Heart is that it’s small. Small enough to fit in a coat pocket. It has a soft cover too.

Viral Video: A student's unique approach to labeling a heart diagram has left the internet in stitches. The now-viral Heart Diagram video features a hand-drawn heart with some unconventional ...