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.
The blood is a transport medium for the movement of nutrients into and wastes out of tissues. Blood flows through 2 distinct circuits; the pulmonary circuit and the systemic circuit. In the Pulmonary Circuit, blood that is high in carbon dioxide and low in oxygen flows from the right heart to the lungs.