The circulatory system, like the water system, continually reuses the same materials.
Their circulartion system is very similar to humans (closed circulatory system)
an open circulatory system
No oysters do not have a closed circulatory system. They have something known as a open circulatory system. They are similar to that of fish. They have something similar to that of the gills in fish so that they are able to function in the aquatic environment. The closed circulatory systems, are usually in the terrestrial animals such as mammals, birds etc.
The human circulatory system moves blood through the body similar to the hydraulic system which moves liquid water.
circulatory system
False
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The circulatory system of a cow is similar to the one in other mammals. The main components are the heart, blood vessels and of course the blood among others.
closed circulatory system (double circulatory system)
They're both the circulatory system.