What is superficial and deep palmar arch?

The deep palmar arch (deep volar arch) is an arterial network found in the palm. It is usually primarily formed from the terminal part of the radial artery. The ulnar artery also contributes through an anastomosis. This is in contrast to the superficial palmar arch, which is formed predominantly by the ulnar artery.

What arteries are given off by the superficial palmar arch?

The superficial palmar arch is formed predominantly by the ulnar artery, with a contribution from the superficial palmar branch of the radial artery….

What is the palmar arch?

n. The deep arterial arch located below the long flexor tendons in the hand, formed by the radial artery in conjunction with the deep palmar branch of the ulnar artery.

How is superficial palmar arch formed?

The superficial palmar arch originates as the terminal branch of the ulnar artery, distal to the flexor retinaculum 1. It is located superficial to the long flexor tendons of the digits and deep to the palmar aponeurosis. The superficial palmar arch travels distally, then laterally across the metacarpals.

What is the significance of the deep palmar arch?

The main function of the deep palmar arch is to provide blood supply for the bones, joints and deep muscles of the hand. These muscles include: adductor pollicis, dorsal interossei, palmar interossei, and lumbrical muscles. Additionally, it supplies the radiocarpal joint via its recurrent branches.

Which palmar arch does the ulnar artery supply?

superficial palmar arch
The ulnar artery arises in the cubital fossa and traverses through the medial (ulnar) side of the forearm and ends within the medial portion of the hand as the superficial palmar arch….Ulnar artery.

How many palmar arches are there?

Hand has derived its arterial supply, from two anastomotic arches, superficial and deep palmar arches which are formed between two main arteries of forearm i.e. radial, ulnar and their branches, in the palm.

Which muscle increases concavity of palmar arch?

adductor pollicis muscle
The deep palmar arch is considered to be a direct palmar continuation of the radial artery. The arch arises between the two heads of the adductor pollicis muscle.

What does the deep palmar arch anastomosis with?

The deep palmar arch is an anastomotic vessel found in the deep compartment of the hand. It is mainly formed by the radial artery with a contribution of the ulnar artery via its deep palmar branch. The main function of the deep palmar arch is to provide blood supply for the bones, joints and deep muscles of the hand.

What is incomplete palmar arch?

In most cases, the superficial palmar arch (SPA) is formed by superficial branches of both the ulnar artery and the radial artery. In the incomplete SPA, the ulnar artery fails to anastomose with the radial and/or the median artery and thus, fails to reach the index finger and the thumb.

What is a superficial artery in arm?

In the arm, the superficial brachial artery ran along the medial border of the biceps brachii muscle, in front of the median nerve. It gave muscular branches to the biceps brachii and brachialis muscles.

What is the function of ulnar artery?

The ulnar artery supplies the periarticular anastomoses of the elbow via the anterior and posterior ulnar recurrent arteries. It also supplies the medial and central forearm muscles, the median and ulnar nerves, and the common flexor sheath 1.

What is the difference between deep palmar and superficial palmar arches?

The superficial palmar arch extends more distally than the deep palmar arch. The connection between the deep and superficial palmar arterial arches is an example of anastomosis, and can be tested for using Allen’s test.

Does the radial artery form the palmar arch?

In some people, the radial artery does not contribute to the formation of the palmar arch. In these minority of cases, the anastomoses, the princeps pollicis artery, the median artery, and radialis indicis arteries comprise this arch. Beside the superficial arch lies the superficial palmar artery, also called the superficial palmar branch.

What is the function of the superficial palmar artery?

It supplies blood to each of the lumbrical muscles. The superficial and deep palmar arches serve as a network of arteries inside the palm. Three of these arteries in the palmar network extend down the lumbrical muscles.

What is the arch of the palm called?

The arch passes across the palm, describing a curve, with its convexity downward. Relations. —The superficial volar arch is covered by the skin, the Palmaris brevis, and the palmar aponeurosis.

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