In humans, the heart’s sinoatrial node (SAN), acts as the body’s pacemaker. A new study, published Wednesday (July 26 ... including 3D tissue reconstruction and molecular characterization, on samples ...

Your heart is an exquisitely engineered pump made almost entirely of muscle. And you can see the extraordinary engineering in action if we slow your heart to a single beat. Inside the cavernous ...

The actual picture ... videoThe human heart This short film uses 3D CGI images to show the movement of blood through the chambers of the heart and also the pacemaker cells. How humans heal themselves.

This new study reveals a dramatically different picture of ... group of neurons with “pacemaker” properties – essentially, specialized cells that help regulate the heart’s beat.