Bill Nye: The Science Guy

Season 2 Episode 3

Blood and Circulation

Aired Unknown Mar 04, 1994 on Disney Channel
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Episode Summary

Blood and Circulation

It's time for a heart-to-heart talk about blood and circulation with Bill Nye the Science Guy.
Your blood is your bud. Without blood, your skin would dry up and fall off, your internal organs would die,
 and your brain would be kaput. Blood gives every cell in your body the food and oxygen it needs to survive.
Blood also cleans up after our cells by carrying away waste. Blood even protects your body from disease.
What more could you ask from a friend?
Blood patrols your entire body. Blood is pushed around by a powerful pump called the heart. Every time
your heart lub-dubs, blood is propelled through tubes called arteries, capillaries, and veins. Your heat
pushes your blood in a complete loop around your body about 2,000 times every day.
Your heart is a muscle, and, like all muscles, it can get stronger. A healthy heart needs exercise to stay
strong. An average heart pumps about 70 times a minute, but a healthy, well-exercised heart pumps 50
or 60 times a minute. Healthy hearts don't have to work as hard to move your blood around. Now that's
pumped up!
Be sure to watch the "Blood and Circulation" episode, because Bill Nye really takes science to heart.


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