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Answered 2011-04-01 16:44:27

the circulatory system does not have a central pump

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mammals have closed circulatory system and further double circulatory system.


Yes it has a closed circulatory system



The circulatory system in insects is open whereby they pump blood into a hemocoel after which blood will diffuse back into the circulatory system. In mammals, the circulatory system is closed and it involves blood moving through blood vessels to the different parts of the body.


Yes. Koalas are mammals, and all mammals have a circulatory system. In fact, all vertebrates have a circulatory system.


Grasshoppers have an open circulatory system, and worms have a closed circulatory system. There you go. :)



No, mammals have a closed circulatory system


An earthworm has a closed circulatory system. Its blood circulates through its vessels. These vessels include the aortic arches, dorsal blood vessels, and the ventral blood vessels.


The circulatory system found in a goat is the one known as the open circulatory system. This is the common type of circulatory system that you will find in most mammals.


The digestive, circulatory, muscular and nervous system.


Humans are mammals so yes you idiot!



The earthworm like many more complex organisms has a closed circulatory system, meaning that its blood is confined to blood vessels and its blood is recirculated so it gets maximum use


open circulatory systemclosed circulatory system.


Tigers are mammals and so their circulatory system is very similar to that of humans.


an earthworm has a closed circulatory system ........ I've searched it :)


Lower animals like the moluscsearthworm


The earthworm like many more complex organisms has a closed circulatory system, meaning that its blood is confined to blood vessels and its blood is recirculated so it gets maximum use


Mammals have a closed Circulatory system. Parts of the system include a heart and veins. It is complex.


The blood circulatory system of the earthworm consists of five main blood vessels; it has aortic arches instead of a heart. The coelom also circulates food, so it could be considered a digestive system or a circulatory system.


Earthworms have a closed circulatory system. Blood is pumped throughout its body by ringed blood vessels. An open circulatory system is not contained in vessels. In a closed circulatory system oxygen is carried in blood! hope this helps=)


the oxygen diffuses to their circulatory system through the skin


It is said because the blood is always in vessels


The circulatory system of mammals helps in the transfer of nutrients, oxygen, and other materials to the cells and removes the metabolic wastes. The circulatory system consist of three parts namely the blood, blood vessels, and the heart which is the pumping organ.



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