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 ...

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 ...

Locate each of the paired and unpaired branches from the dorsal aorta, using Figure 5.4, pages 58 - 60. Keep function and integration of circulatory system in mind as you locate organs.

However, these so-called static models fail to reproduce what occurs in vivo since they lack a key component of the circulatory system: the physical forces exerted by blood flowing through the blood ...

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 ...

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 ...