The brand's famously low prices. Groceries at Aldi are shockingly cheaper than those at Wal-Mart, according to a study by Cheapism. They're also cheaper than those at industry darling Trader Joe's. Aldi employs a few smart strategies to sell groceries for so cheap. You won't find many brand names at Aldi.
Gas Exchange Between Alveolar Spaces and Capillaries. The function of the respiratory system is to exchange two gases: oxygen and carbon dioxide. The exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
1 oxygen moves from a [H] concentration in the lungs/alveoli to a [L] concentration in the blood. 2  carbon dioxide moves from [H] concentration in the blood to a [L] concentration in the lungs/alveoli. 3  oxygen moves from a [H] concentration in the blood to a [L] concentration in the tissues. carbon dioxide moves from [H] concentration in the blood to a [L] concentration in the lungs/alveoli. 2  oxygen moves from a [H] concentration in the blood to a [L] concentration in the tissues.