. The anatomy of the domestic animals. Veterinary anatomy. THE MEDIAN ARTERY 657 interossea dorsalis) descends between the common and lateral extensors of the digit and concurs with the anterior radial in forming a network on the dorsal surface of tlie carpus, the rete carpi dorsale. From the latter arise two small vessels, the medial and lateral dorsal metacarpal arteries (A. metacarpea dorsalis medialis, lateralis), which run distalh' in the gnxjvcs l>etween the large and small metacarpal bones and anastomose with the volar metacarpal arteries. 4. The artery of the rete carpi volare (A. r
. The anatomy of the domestic animals. Veterinary anatomy. THE MEDIAN ARTERY 657 interossea dorsalis) descends between the common and lateral extensors of the digit and concurs with the anterior radial in forming a network on the dorsal surface of tlie carpus, the rete carpi dorsale. From the latter arise two small vessels, the medial and lateral dorsal metacarpal arteries (A. metacarpea dorsalis medialis, lateralis), which run distalh' in the gnxjvcs l>etween the large and small metacarpal bones and anastomose with the volar metacarpal arteries. 4. The artery of the rete carpi volare (A. retis carpi volaris) is a small vessel which arises at the distal third of the forearm and descends on the radius to the posterior surface of the carpus, where it concurs with branches of the volar meta- carpal arteries in forming tlie rete carpi volare. 5. The lateral volar metacarpal artery (A. metacarpea volaris lateralis)^ is a small vessel which arises just above the carpus under cover of the flexor carpi ulnaris and anastomoses with the ulnar artery, forming the supracarpal arch. From the latter a branch descends with the lateral Ijranch of the median nerve, Skin Mc. Ill Mr. II. Common digital vein Common digital artery Medial volar nerve Superficial flexor tendon ' Fig. 371.—Cross-section of Right Metacarpus of Horse. Section is cut a little above middle of region. Dorsal metacarpal arteries; 2, 2', deep volar metacarpal arteries; 3, deep volar metacarpal ' carpal sheath. Tendon of common eJiensor un of lateral extensor Mc. IV Suspensory ligamciU Lateral volar metacarpal vessel Lateral volar nerve Check ligament Deep flexor tendon Deep fascia 4, distal part of inclines outward toward the posterior border of the accessory carpal bone, and arrives at the head of the lateral metacarpal bone. Here it is connected with the medial volar metacarpal artery, usually by two transverse branches, thus forming the deep volar or subcarpal arch (Arcus volaris profundus proximalis). On
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