Final answer:
The root phleb- and ven- both mean veins in biology.
Step-by-step explanation:
The root phleb- and ven- both mean veins in the context of biology.
A vein is a blood vessel that conducts blood toward the heart. Veins are thin-walled vessels with large and irregular lumens. They are low-pressure vessels equipped with valves that promote the unidirectional flow of blood toward the heart.
Examples of veins in the human body include the median cubital vein, maxillary vein, and the plantar veins.