This blood test is taken from an artery instead of a vein. Blood is usually collected from veins, which is blood mostly depleted of oxygen returning to the lungs to exchange its carbon dioxide. Arteries carry oxygenated blood, so this test is a sensitive lung function test.Collection of ...
Pulmonary veins – carry oxygenated blood from respiratory zones to the heart Blood Supply to Lungs Bronchial arteries – provide systemic blood to the lung tissue Arise from aorta and enter the lungs at the hilus Supply all lung tissue except the alveoli ...