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.
In summary, capillaries are the site of oxygen exchange between the bodyâs tissues and the blood stream. Capillaries and arteries carry oxygenated red blood cells, and venules and veins carry the deoxygenated blood cells. The smallest capillaries in the body are in the brain.The brain uses an incredible amount of oxygen and therefore needs many blood vessels to bring in this oxygen and carry away the waste.he smallest capillaries in the body are in the brain. The brain uses an incredible amount of oxygen and therefore needs many blood vessels to bring in this oxygen and carry away the waste.