Blood supply
The lungs have a dual blood supply. The pulmonary artery supplies deoxygenated blood to the alveolar capillaries where gas exchange occurs. The pulmonary vein, carrying oxygenated blood, drains the pulmonary capillaries. Bronchial arteries, lying in the walls of the passageways, supply oxygenated blood to respiratory passages.
Pulmonary artery
The lungs have a dual blood supply. The pulmonary artery supplies deoxygenated blood to the alveolar capillaries where gas exchange occurs. The pulmonary vein, carrying oxygenated blood, drains the pulmonary capillaries. Bronchial arteries, lying in the walls of the passageways, supply oxygenated blood to respiratory passages.
Pulmonary capillaries
The lungs have a dual blood supply. The pulmonary artery supplies deoxygenated blood to the alveolar capillaries where gas exchange occurs. The pulmonary vein, carrying oxygenated blood, drains the pulmonary capillaries. Bronchial arteries, lying in the walls of the passageways, supply oxygenated blood to respiratory passages.
Pulmonary veins
The lungs have a dual blood supply. The pulmonary artery supplies deoxygenated blood to the alveolar capillaries where gas exchange occurs. The pulmonary vein, carrying oxygenated blood, drains the pulmonary capillaries. Bronchial arteries, lying in the walls of the passageways, supply oxygenated blood to respiratory passages.
Bronchiolar vessels
The lungs have a dual blood supply. The pulmonary artery supplies deoxygenated blood to the alveolar capillaries where gas exchange occurs. The pulmonary vein, carrying oxygenated blood, drains the pulmonary capillaries. Bronchial arteries, lying in the walls of the passageways, supply oxygenated blood to respiratory passages.