Posterior intercostal veins
Posterior Intercostal Veins are a group of veins that drain the intercostal space, the space between the ribs in the human body. They are part of the venous system and play a crucial role in the circulation of blood.
Etymology[edit | edit source]
The term "Posterior Intercostal Veins" is derived from the Latin words 'posterior' meaning 'behind', 'inter' meaning 'between', and 'costa' meaning 'rib'. Thus, the term refers to the veins that are located behind the spaces between the ribs.
Anatomy[edit | edit source]
The Posterior Intercostal Veins are located in the thoracic cavity, specifically in the spaces between the ribs. They are paired veins, with one vein present on either side of the rib space. These veins drain the blood from the intercostal muscles and surrounding areas and carry it back to the heart.
The Posterior Intercostal Veins are connected to the azygos vein on the right side and the hemiazygos vein and accessory hemiazygos vein on the left side. These veins eventually drain into the superior vena cava, which carries the blood back to the heart.
Function[edit | edit source]
The primary function of the Posterior Intercostal Veins is to drain the blood from the intercostal muscles and surrounding areas. They carry deoxygenated blood, which has been used by the muscles for their metabolic activities, back to the heart. This blood is then sent to the lungs for oxygenation before being circulated to the rest of the body.
Clinical Significance[edit | edit source]
Abnormalities or damage to the Posterior Intercostal Veins can lead to various medical conditions. For instance, blockage of these veins can cause intercostal vein thrombosis, a condition characterized by the formation of a blood clot in the veins. This can lead to pain, swelling, and potentially serious complications if the clot travels to the lungs.
Related Terms[edit | edit source]
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Contributors: Prab R. Tumpati, MD
