1　血管尤其是静脉的走行异常 ,在临床上比较常见。用 1例成年男尸 (约 6 5岁 )作标本时 ,发现由主动脉弓第一段发出的无名动脉 (距左室口约 9.3cm) ,上行 1cm后由该动脉发出左、右颈总动脉 ,沿颈根部上行 ,而左锁骨下动脉和右锁骨下动脉也均直接起自主动脉弓 (如图 1) ,其左锁 1 blood vessels, especially the abnormal walking vein, is more common in clinical practice. When an adult male corpse (about 65 years old) was used as a specimen, an anonymous artery (about 9.3 cm from the left ventricular orifice) was found from the first segment of the aortic arch. The left and right common carotid arteries were emanated from the artery 1 cm upstream, Along the neck up, while the left subclavian artery and the right subclavian artery also directly from the aortic arch (Figure 1), the left lock