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As it moves downward, the abdominal aorta splits into three main branches: the renal arteries (which supply the kidneys), the celiac artery (supplying the stomach and liver), and the superior and ...

The posterior communicating artery is located in the back of the head at the back end of the circle of Willis. The circle of Willis is a band of arteries at the base of the brain that connects the ...

What is lumbar spinal stenosis? Lumbar spinal stenosis is a narrowing of the spinal canal in the lower back (lumbar spine). The spinal canal houses the spinal cord and nerves. The narrowing caused by ...