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The blood supply of the spinal cord is provided by three major arteries: the 🟥 anterior spinal artery, and two ⬜️ posterior spinal arteries. These arteries arise from larger vessels that originate from the aorta and are responsible for delivering 💨 oxygen and 🍎 nutrients to the spinal cord. Disruptions to blood flow to the spinal cord can result in serious neurological damage or even 🦽, underscoring the importance of proper blood supply to this crucial part of the central nervous system. Understanding the anatomy and function of the blood supply of the spinal cord is essential for the effective diagnosis and treatment of conditions affecting this region of the body. ▬ Arterial Supply of Spinal Cord ▬▬▬▬▬▬▬▬▬▬ The spinal cord is a long, thin, cylindrical bundle of nerves that runs from the brainstem to the lower back. It is responsible for transmitting sensory information from the body to the brain, and motor commands from the brain to the body. 🧠💭💪 The spinal cord receives its blood supply from a network of arteries that provide oxygen and nutrients to the nerve tissue. 💉🩸 Several arteries supply the spinal cord, including the arteria vertebralis, arteria spinalis anterior, arteria spinalis posterior, arteria radicularis, arteria vasocorona, and arteria segmenti. Here is a brief explanation of each: 👉 Arteria vertebralis This artery arises from the subclavian artery and enters the spinal canal through the foramen magnum. It supplies blood to the cervical and upper thoracic portions of the spinal cord. 🩸💡 👉 Arteria spinalis anterior This artery runs along the anterior surface of the spinal cord and supplies blood to the anterior two-thirds of the spinal cord. 🩸👉 👉 Arteria spinalis posterior This artery runs along the posterior surface of the spinal cord and supplies blood to the posterior one-third of the spinal cord. 🩸👈 👉 Arteria radicular These arteries arise from the segmental arteries that branch off the aorta and supply blood to the nerve roots as they exit the spinal cord. 💉🩸🌳 👉 Arteria vasocorona This artery is a small network of blood vessels that surrounds the outer surface of the spinal cord and supplies blood to the white matter. 🩸💬👥 👉 Arteria segment These arteries arise from the radicular arteries and supply blood to individual segments of the spinal cord. 🩸🎯 The arterial supply of the spinal cord is critical for maintaining its function and health. Interruption of blood flow to the spinal cord, such as through injury or disease, can cause severe neurological deficits and even paralysis. 💔⚠️🚨 ▬ Venous Supply of Spinal Cord ▬▬▬▬▬▬▬▬▬▬ The spinal cord receives venous drainage from several sources, including the anterior and posterior spinal veins, the radicular veins, and the segmental veins. The anterior and posterior spinal veins are located on the surface of the spinal cord, with the anterior spinal vein running down the anterior median fissure and the posterior spinal veins running along the dorsal surface of the spinal cord. These veins drain into the vertebral venous plexus, which is a network of veins that runs along the vertebral column. 🩸🧍♂️🦴 The radicular veins accompany the spinal nerves as they exit the vertebral canal and drain into the internal vertebral venous plexus. 💉🌳🧬 The segmental veins drain the spinal cord segments and accompany the corresponding arteries. They eventually drain into the internal vertebral venous plexus, which then empties into the inferior and superior vena cava. 🩸🧬🚶♀️💨 It is important to note that the venous drainage of the spinal cord is not as well-defined as its arterial supply. Additionally, spinal cord veins can be a potential site for the spread of metastatic cancer cells. 💭⚠️🦠