The transverse sinuses (left and right lateral sinuses), within the human head, are two areas beneath the brain which allow blood to drain from the back of the head. They run laterally in a groove along the interior surface of the occipital bone.
Two areas located on either side of the brain, within the skull, are known as the transverse sinuses. These sinuses enable blood to circulate from the rear portion of the head by running horizontally along the interior surface of the occipital bone.