When Xi stepped up to the podium at Davos in January and delivered a robust defense of free trade to the globe's financial elite, the Western world was stunned. â ben westcott, CNN, Why China won 2017 and how Donald Trump helped them do it, 3 Nov. 2017
Confidence votes 120. Capillaries are very small blood vessels that are small enough to exchange gases, nutrients, waste products, etc. with tissues.
Capillaries: Capillaries are the smallest of blood vessels. They serve to distribute oxygenated blood from arteries to the tissues of the body and to feed deoxygenated blood from the tissues back into the veins. The capillaries are thus a central component in the circulatory system, essentially between the arteries and the veins.