Anterior intercostal veins
Anterior Intercostal Veins[edit | edit source]
The anterior intercostal veins are a group of veins located in the thoracic wall. They are responsible for draining blood from the intercostal spaces and are part of the venous system of the thorax. These veins are important for the return of deoxygenated blood from the rib cage to the heart.
Anatomy[edit | edit source]
The anterior intercostal veins are situated in the intercostal spaces, which are the spaces between the ribs. Each intercostal space contains a vein, an artery, and a nerve, collectively known as the neurovascular bundle. The anterior intercostal veins run parallel to the intercostal arteries and intercostal nerves.
Origin[edit | edit source]
The anterior intercostal veins originate from the capillary beds in the intercostal muscles and the overlying skin. They collect blood from the muscles, skin, and parietal pleura of the thoracic wall.
Course[edit | edit source]
The veins travel anteriorly in the intercostal spaces, running along the inferior border of the ribs. They accompany the anterior intercostal arteries and nerves, forming part of the neurovascular bundle.
Drainage[edit | edit source]
The anterior intercostal veins drain into the internal thoracic vein (also known as the internal mammary vein). The internal thoracic vein runs parallel to the sternum and eventually drains into the brachiocephalic vein.
Function[edit | edit source]
The primary function of the anterior intercostal veins is to return deoxygenated blood from the thoracic wall to the heart. This is part of the systemic circulation, which is responsible for transporting blood throughout the body.
Clinical Significance[edit | edit source]
The anterior intercostal veins can be involved in various clinical conditions. For example, they may become engorged in cases of superior vena cava syndrome, where the normal flow of blood through the superior vena cava is obstructed. Additionally, these veins may be encountered during surgical procedures involving the thoracic wall, such as thoracotomy or mastectomy.
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