Radial artery of index finger

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Radial artery of index finger
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Palm of left hand, showing position of skin creases and bones, and surface markings for the volar arches.
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Ulnar and radial arteries. Deep view. (Vol. ind. radialis labeled at lower left.)
Details
Source Deep palmar arch
Supplies Index finger
Identifiers
Latin arteria radialis indicis
TA98 A12.2.09.037
TA2 4651
FMA 22763
Anatomical terminology

The radialis indicis artery (radial artery of index finger) is a branch of the radial artery that provides blood to the index finger.

It arises close to the princeps pollicis artery, and descends between the first dorsal interosseous muscle and the transverse head of the adductor pollicis, and runs along the lateral side of the index finger to its extremity, where it anastomoses with the proper digital artery, supplying the medial side of the finger.

At the lower border of the transverse head of the adductor pollicis, this vessel anastomoses with the princeps pollicis, and gives a communicating branch to the superficial palmar arch.

The princeps pollicis and radialis indicis may arise from a common trunk termed the first palmar metacarpal artery.

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<span class="mw-page-title-main">Dorsal carpal branch of the radial artery</span>

The dorsal carpal branch of the radial artery is a small vessel which arises beneath the extensor tendons of the thumb; crossing the carpus transversely toward the medial border of the hand, it anastomoses with the dorsal carpal branch of the ulnar artery.

The posterior compartment of the forearm contains twelve muscles which primarily extend the wrist and digits. It is separated from the anterior compartment by the interosseous membrane between the radius and ulna.

<span class="mw-page-title-main">Extrinsic extensor muscles of the hand</span>

The extrinsic extensor muscles of the hand are located in the back of the forearm and have long tendons connecting them to bones in the hand, where they exert their action. Extrinsic denotes their location outside the hand. Extensor denotes their action which is to extend, or open flat, joints in the hand. They include the extensor carpi radialis longus (ECRL), extensor carpi radialis brevis (ECRB), extensor digitorum (ED), extensor digiti minimi (EDM), extensor carpi ulnaris (ECU), abductor pollicis longus (APL), extensor pollicis brevis (EPB), extensor pollicis longus (EPL), and extensor indicis (EI).

<span class="mw-page-title-main">Muscles of the thumb</span>

The muscles of the thumb are nine skeletal muscles located in the hand and forearm. The muscles allow for flexion, extension, adduction, abduction and opposition of the thumb. The muscles acting on the thumb can be divided into two groups: The extrinsic hand muscles, with their muscle bellies located in the forearm, and the intrinsic hand muscles, with their muscles bellies located in the hand proper.

References

PD-icon.svgThis article incorporates text in the public domain from page 595 of the 20th edition of Gray's Anatomy (1918)