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Health Forum    Heart Diseases
Health Discussion Forum


AllyBabiiex3
is it normal for a whale's heart to stop beating when it's asleep?
is it? plz give ur opinions cuz i really need help with it i have a due report day on that..................
                      








Polo
Rating
Whales sleep about 8 hours each day. Whales don't go into a deep sleep like we do, because they have to be partially conscious to breathe. Whales are able to partly sleep by letting one half of their brain sleep at a time. This is called unihemispherical sleeping.

http://www.enchantedlearning.com/subjects/whales/anatomy/Sleep.shtml

When they dive, their heart beats more slowly and select arteries are constricted. This slows the flow of blood to certain organs without decreasing blood pressure.

http://science.howstuffworks.com/whale.htm/printable


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