The brnchial arteries that supply the bronchi, bronchioles, and connective tissue of the lungs emerge as tiny branches from the anterior wall of the

descending thoracic aorta

The descending thoracic aorta is the continuation of the descending aorta. It is located in the thorax and contained in the posterior mediastinal cavity. The aorta is one of the largest arteries in the body and branches off to the bronchial arteries among others.

The bronchial arteries supply the lungs with nutrition and oxygenated blood. They travel with the bronchi to the bronchioles.

the sphincter muscles at the end of the digestive tract is the anus.

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