Deep Palmar Arch As the radial artery continues in the hand, it wraps around the thumb and comes across the deep palm.
This vessel, which resembles the shape of an arch, is called the deep palmar arch. This small but important vessel sends off small branches to supply blood to the thumb and index finger. It also connects to the superficial palmar arch in most people.
Superficial Palmar Arch As the ulnar artery continues in the hand, it travels across the palm. The vessel creates the shape of an arch, and is called the superficial palmar arch. This vessel communicates with the deep palmar arch and also gives off important branches which supply blood to the fingers.
These are called the common digital arteries. Common Digital Arteries The common digital arteries are small vessels that come from the palmar arches and supply blood to the fingers.
The splits, which occur in the palm, become the proper digital arteries to the fingers. Digital Arteries to the Thumb The thumb receives its blood supply from the digital arteries to the thumb. Proper Digital Arteries to the Fingers As the common digital arteries travel from the palm toward the fingers, they split near the finger web spaces to become the proper digital arteries.
The split feeds two different fingers. For example, the common digital artery that travels in the palm between the middle and ring fingers splits and then gives one vessel to the ring finger and one vessel to the middle finger.
If one of these vessels is injured, the others can usually maintain the blood supply to the entire finger. Learn more about arteries of the upper extremity, including those that run up the arm, by visiting our anatomy page. They are: Deep Palmar Arch Named for its shape of an arch, the deep palmar arch is small but important. Using this search tool means you agree to the user agreement and disclaimer. Related Blogs. Humans are sexual, meaning that both a male and a female are needed to reproduce.
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