The engine of life
The vast red highway
The river of life
Pioneers of the pulse
Keeping the beat
YOUR GOAL
Master of The human circulatory system
artiteacher Keeping the beat
A highway of rivers that run deep inside, Wrapping twice 'round the Earth on a beautiful ride.
artiteacher In the microgravity of space, the heart does not have to work as hard and actually changes shape.
artiteacher Regular physical activity strengthens the heart muscle, making it more efficient at pumping blood.
artiteacher Tap the heart in rhythm to discover how blood delivers oxygen to your body.
Whale hearts: A blue whale's heart is so large that a human child could easily crawl through its main artery, the aorta.
A specialized group of cells or an electronic device that regulates the rhythm of the heartbeat. In 1958, Swedish surgeon Åke Senning implanted the first clinical device to regulate a patient's heart.
What is the typical resting heart rate range for a healthy, non-athlete adult human?
How many times per minute does the massive heart of a blue whale beat when it dives?
What is the physiological response that slows down the human heart rate when the face is submerged in cold water?
What physical change happens to an astronaut's heart shape while living in microgravity?
Why can an elite athlete's resting heart rate safely drop below 40 beats per minute?
By up to what percentage can the mammalian dive reflex reduce a human's heart rate?