Discover the hidden ways stress and lifestyle choices are sabotaging your gut health and learn how to restore balance ...

Your daily habits impact blood flow more than you realize. Learn how small changes in movement, hydration, and sleep can ...

The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, ...

“One big difference is that whales are often traveling thousands of miles across ocean basins–great whales undertake the ...

Veins between two capillary networks are portal systems. Closed circulatory system, but fluid constituents of blood leak out of capillaries and return to the heart by the second component of the ...

That means that the vans are very busy indeed, all the time. So it's a good job we've got the circulatory system to transport nutrients, water and oxygen to the entire body. Your circulatory ...

This article was originally published with the title “ The Circulatory System of Plants ” in Scientific American Magazine Vol. 200 No. 2 (February 1959), p. 44 doi:10.1038 ...

The heart is a muscular organ that pumps blood around your circulatory system. The circulatory system is the heart and all the blood vessels in the body which carry cells and substances to all its ...