Final answer:
The artery right below the ankle bone is the dorsalis pedis artery. It is a continuation of the anterior tibial artery and provides blood to the tarsal and dorsal regions of the foot.
Step-by-step explanation:
The artery right below the ankle bone is the dorsalis pedis artery. This artery is actually a continuation of the anterior tibial artery, which is located between the tibia and fibula. The dorsalis pedis artery provides blood to the tarsal and dorsal regions of the foot.