Hand Arterial Anatomy

This complex structure connects the entire hand to the radius and ulna facilitates the passage of tendons together with the above mentioned neurovascular structures from the forearm to the hand and permits us to exploit all its movements. First dorsal metacarpal artery arises just before the radial artery passes between the two heads of the first dorsal interosseous muscle and divides almost immediately into two branches which supply the adjacent sides of the thumb and index finger.

Upper Extremity Arteries Radiology Key

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Hand arterial anatomy. Arterial supply to the hand begins with the ulnar and radial arteries. This allows the hand to be perfused even when under high resistance to flow such as when grasping or applying pressure. You can click the image to magnify if you cannot see clearly.

This rich vascular network can be divided into palmar and dorsal components. In the index finger the ulnar digital artery is dominant. These nerves supply the skin muscles joints and other tissues.

The main nerves you need to know for the wrist and hand come from the median ulnar and radial nerves. The anatomy of the hand is incomplete without understanding the wrist. The arterial supply to the hand is comprised of a complex vascular network formed from the branches and distal continuations of the radial and ulnar arteries.

This small but important vessel sends off small branches to supply blood to the thumb and index finger. This vessel which resembles the shape of an arch is called the deep palmar arch. In the little finger the radial digital artery is dominant in the middle and ring fingers ulnar and radial digital arteries are dominant respectively but dominance is less obvious.

The nerves allow you to feel what your hands and fingers are touching and help you move those muscles around. The arteries are the blood vessels that deliver oxygen rich blood from the heart to the tissues of the body. This image added by admin.

The hand has a rich arterial supply with many anastomoses between vessels. As the radial artery continues in the hand it wraps around the thumb and comes across the deep palm. Each artery is a muscular tube lined by smooth tissue and has three layers.

The lateral side of the thumb receives a branch directly from the radial artery.

Right Arm Veins Diagram Printable Diagram Arteries