Poster Diagram of Mammalian Alveolus of the Lungs

An alveolus (plural: alveoli, from Latin alveolus, "little cavity") is an anatomical structure that has the form of a hollow cavity. Found in the lung parenchyma, the pulmonary alveoli are the dead ends of the respiratory tree, which outcrop from either alveolar sacs or alveolar ducts, which are both sites of gas exchange with the blood as well. Alveoli are particular to mammalian lungs. Different structures are involved in gas exchange in other vertebrates. The alveolar membrane is the gas-exchange surface. The blood brings carbon dioxide from the rest of the body for release into the alveoli, and the oxygen in the alveoli is taken up by the blood in the alveolar blood vessels, to be transported to all the cells in the body. Image reproduction rights can be found in the link near the bottom of this description. Sign up to Mr. Rebates for FREE and save 12% on any zazzle order in addition to a $5.00 sign up bonus All Rights Reserved; without: prejudice, recourse or notice (U.C.C. 1-308) Image Reproduction Rights: http://commons.wikimedia.org/wiki/File:Alveolus_diagram.svg alveolus lung anatomy diagram alveoli "Pulmonary alveolus" "alveolar sacs" "alveolar ducts" "lung parenchyma" "alveolar blood vessels" "alveolus diagram" "alveolus chart" "human lungs" "human alveolus" biology anatomy "anatomy chart" "anatomy diagram" science "science chart" "science diagram" breathing