ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Brain blood vessels. Coloured 3D computed tomography (CT) scan and angiogram, highlighting the blood vessels (orange and blue) in the brain. This is a left-side view of the head of a 40-year-old man. The arteries (orange) include the carotid and vertebral arteries. The veins (blue) include the large sinuses (the dural venous sinuses) that drain blood from the brain into the internal jugular vein.
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