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解剖1例女性左侧上肢标本时,见掌浅弓呈环形。桡动脉的掌浅支与尺动脉的末端除常规吻合形成浅弓外,前者又在发出第1支指掌侧总动脉前5mm处向尺动脉发一较大的吻合支,与尺动脉末端汇合,从而形成一动脉环,整体呈五边形。五边形动脉环的近侧两个角分别与桡动脉的掌浅支,尺动脉的末端相连。由桡侧向尺侧依次发出食指桡掌侧固有动脉和第1,2,3指掌侧总动脉及小指掌尺侧固有动脉(附图)。桡动脉掌浅支外径0.2mm,尺动脉末端外径0.2mm,五边形近侧边,即桡动脉浅支与尺动脉末端的吻合支长7mm,其它四边由桡侧向尺
Anatomy of a female left upper limb specimens, see the palm of your hand bow was ring. Radial artery and superficial branch of the ulnar artery in addition to conventional stapling the distal arch to form a shallow bow, the former in the first branch of the palm before giving the first 5 mm lateral to the ulnar artery a larger anastomosis branch, and ulnar artery confluence , Thus forming an arterial ring, the whole was pentagonal. The proximal two corners of the pentagonal artery ring are connected to the distal branch of the radial artery and to the distal end of the ulnar artery, respectively. From the radial side to the ulnar side of the radial forelimb spontaneous arteries and the first, second and third finger palm side of the common carotid artery and the ulnar side of the inherent arteries (with photos). Radial artery superficial branch of the outer diameter of 0.2mm, the ulnar artery end of the outer diameter of 0.2mm, pentagonal proximal edge, that radial artery superficial and ulnar artery anastomosis of the distal length of 7mm, the other four by the radial lateral ruler