Pulmonary sequestration is characterized by arterial supply from which vessel?

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Pulmonary sequestration is a congenital piece of lung tissue that does not connect to the bronchial tree and receives its arterial blood from the systemic circulation. The most common source is the aorta or its branches, such as thoracic or abdominal aorta, delivering high-pressure systemic blood to the sequestered segment. This is in contrast to normal lung tissue, which is supplied by the pulmonary arteries. The other vessels listed are not sources of arterial supply to sequestration: the pulmonary artery feeds normal lung tissue, coronary arteries supply the heart, and the inferior vena cava carries venous blood.