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A Moment of Science

Posts tagged contractions

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.

September 27, 2003

 

Stomache Growls

When our brain tells us its time to eat, a reflex kicks in that makes the stomach walls contract. The contractions cause the digested food in the intestine to move down towards the rectum.

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