Blood supply of thorax from "summary" of Bd Chaurasia's Human Anatomy, Volume 1 by B. D. Chaurasia
The thorax receives blood from several arteries. The thoracic aorta is the main artery that supplies blood to the thorax. It gives off branches to supply various structures in the thoracic region. The branches of the thoracic aorta include the posterior intercostal arteries, superior phrenic arteries, and pericardial arteries. The posterior intercostal arteries supply blood to the muscles and skin of the thoracic wall. They also contribute to the blood supply of the breast. The internal thoracic artery is another important artery that supplies blood to the thorax. It arises from the subclavian artery and descends along the inner surface of the anterior chest wall. The internal thoracic artery gives off branches that supply blood to the anterior chest wall, breast, and the upper abdominal wall. The branches of the internal thoracic artery include the anterior intercostal arteries and the musculophrenic artery. The lateral thoracic artery is a branch of the axillary artery that supplies blood to the lateral part of the thoracic wall. It gives off branches that supply the serratus anterior muscle and the breast. The thoracic wall also receives blood from the branches of the subclavian artery. The subclavian artery gives off the superior thoracic artery, which supplies blood to the first and second intercostal spaces. The thorax is well-supplied with blood from various arteries, ensuring that the structures in this region receive an adequate blood supply. The arteries supplying the thorax give off branches that supply blood to the muscles, skin, and other structures in the thoracic region. Understanding the blood supply of the thorax is important for the study of human anatomy and for medical professionals working in this area.
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