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.
Blood vessels are the conduits through which blood is transported and blood contains the valuable nutrients and oxygen that are needed to sustain tissues and organs. The circulatory system circulates blood in two circuits: the pulmonary circuit and systemic circuit.