A pattern, apart from the term's use to mean template, is a discernible regularity in the world or in a manmade design. As such, the elements of a pattern repeat in a predictable manner. A geometric pattern is a kind of pattern formed of geometric shapes and typically repeated like a wallpaper.
The vena cava is the major vein that returns blood to the right atrium of the heart. The vena cava superior returns blood from the head, neck, upper extremities, and chest. The vena cava inferior returns blood from the lower extremities, the pelvis, and the abdomen.
The blood vessels that carry blood back to the heart are called veins. (Blood does not return to the heart until it passes through the spleen, where dead blood cells go.). 3 people found this useful. Edit.he blood vessels that carry blood back to the heart are called veins. (Blood does not return to the heart until it passes through the spleen, where dead blood cells go.). 3 people found this useful. Edit.