Which artery supplies solution directly to the thumb's side of the hand?

• A. Ulnar artery
• B. Brachial artery
• C. Radial artery
• D. Circumflex artery

Answer: (C)

The radial artery is the correct choice as it primarily supplies blood to the thumb side of the hand. Specifically, it runs along the lateral aspect of the forearm and extends into the hand, where it contributes to the blood supply of the thumb and the lateral part of the hand.

The radial artery is significant in both anatomy and in practice as it is often used in procedures involving embalming. Its location and the areas it supplies make it essential for ensuring adequate distribution of embalming fluid to the thumb side, helping achieve better preservation and presentation during the embalming process.

In contrast, the ulnar artery primarily supplies the medial side of the hand, specifically the little finger and adjacent areas. The brachial artery serves as the main arterial supply to the arm and bifurcates into the radial and ulnar arteries at the elbow, which does not directly address the thumb side. The circumflex artery is primarily associated with the supply to certain regions of the shoulder and upper arm rather than the hand directly.