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 ...

Between 10 and 20 per cent of the Western adult population has high blood pressure. The sensation of pins and needles is caused by an impairment of blood circulation.

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 ...

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 ...

An engaging, comprehensive, richly illustrated textbook about the atmospheric general circulation, written by leading researchers in the field. The book elucidates the pervasive role of atmospheric ...

The circulation system plays a "significant role" in regulating the Earth's climate by distributing heat around the globe. A significant shift in the system of ocean currents that helps keep parts ...