What is the main site of gas exchange quizlet?
Where does gas exchange occur? Gas exchange occurs within the lower airways, primarily the alveoli. Often called the "business end" of respiration. Blood entering the lungs via the pulmonary artery is deoxygenated.
What are the two sites of gas exchange?
Gas exchange occurs at two sites in the body: in the lungs, where oxygen is picked up and carbon dioxide is released at the respiratory membrane, and at the tissues, where oxygen is released and carbon dioxide is picked up.
Where is the alveoli located?
the lungsTiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
What is the alveolar sac?
A pulmonary alveolus (plural: alveoli, from Latin alveolus, "little cavity"), also known as an air sac or air space, is one of millions of hollow, distensible cup-shaped cavities in the lungs where oxygen is exchanged for carbon dioxide.