The pacemaker cells control heart rate and determine how fast the heart pumps blood. Cardiac muscle tissue gets its strength and flexibility from its interconnected cardiac muscle cells ...

How big is a horse heart? How much blood can a horse's heart pump? Here's everything you need to know about equine hearts.

There's not much research specifically surrounding the muscle pump and its contribution to muscle growth. Still, there's a ...

The heart usually beats in an amazing harmonious synchronicity. A heart that beats 72 beats per minute, beats 4,320 times per hour, 103,680 times per day, 35 million times per year and 2 ½ billion ...