Along with its 1,100 tributaries and other smaller watercourses, the Amazon forms a complex communications network that could be likened to the circulatory system of the human body, of which the Amazon compares to the aorta, the body’s largest artery.
Ja sarežģīto tīklu, ko veido Amazone kopā ar 1100 pietekām un citām mazākām upītēm, salīdzina ar cilvēka asinsrites sistēmu, tad Amazone tajā ir aorta — pati lielākā artērija.