Anatomy primer
Anatomy
Blood supply
Two main arteries — the radial (thumb side) and ulnar (little-finger side) — feed the hand. They join in two arches in the palm so most fingers stay supplied even if one route is blocked.
Key structures
- radial artery
- ulnar artery
- superficial palmar arch
- deep palmar arch
Sources
- Hand and wrist anatomy — American Society for Surgery of the Hand(accessed 2026-04-22)