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PURETICS...

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Interesting Findings And World Unfolding Through My Eyes.

Tuesday, September 25, 2007

Why doesn't blood rush to a bat's head when it hangs upside down?

Why doesn't blood rush to a bat's head when it hangs upside down?

All animals are designed to make sure that enough blood circulates round their body regardless of what position they are in.

In this way, bats are no different from humans. The process involves the force of the heartbeat ensuring that blood is pushed around the relevant parts of the body, through the system of the arteries, capillaries and veins and back to the heart again, without being affected by gravity or the direction of the body.

The fact that bats have proportionately larger hearts than many mammals means the blood is even more efficiently pumped around their bodies and doesn't drain to the head just because they are hanging upside down.

Posted by Ajay :: 5:35 PM :: 0 comments

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