A Moment of Science

Posts tagged circulatory

April 12, 2012

 

penguin_feet

Bare Feet: Why So Warm

What keeps penguin's feet from freezing? Penguins' feet don't freeze because of the blood circulating in them.

August 1, 2006

 

a man checks his pulse while using a blood pressure monitor

The Big Squeeze

If you've ever had your blood pressure checked. But did you ever wonder why it's your upper arm that gets the big squeeze, rather than your wrist or your leg?

May 22, 2006

 

bug_heart

A Bug’s Gotta Have Heart

Do insects even have hearts? Sure they do, but their hearts are somewhat different from human hearts.

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