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正中神经外侧根起于臂丛外侧束,含第5、6、7颈神经腹侧支纤维;正中神经内侧根起于臂丛内侧束,含第8颈神经和第1胸神经腹侧支纤维,两神经根夹腋动脉第3段,并在腋动脉前外侧汇合形成正中神经[1]。笔者在进行局部解剖学实验教学即尸体标本解剖中发现1例左臂部正中神经变异1例,即臂丛外侧束发出交通支参与正中神经内侧根形成,肌皮神经与正中神经外侧根共干距离较长,正中神经外侧根与内侧根汇合形成正中神经处校正常低,三种变异同时存在较为少见,为丰富国人解剖学资料并为临床提供解剖学依据,现报道如下。 相似文献
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<正>臂丛的变异率较高,变异类型较多[1]。作者在解剖一具成年男性尸体时发现双侧臂丛存在多处变异,经查阅文献得知,近年来虽有臂丛变异情况的相关报道[2-4],但未见此例中双侧臂丛组成与正常型不同,且右侧臂丛与腋动脉位置走行也出现变异的情况。现将此变异报告如下,以期为临床臂丛手术提供参考和解剖数据积累。1材料与方法经10%福尔马林溶液灌注的男性尸体一具(外观无任何畸形),标本来源于宜春学院医学院人体解剖实验室,按常规解剖操作,充分暴露两侧腋窝及臂部结构,鉴别臂丛的根、干、股、束及分支的起始部位、走行关系、分布区域及毗邻结构,观测交通支的存在情况。使用游标卡尺(精确度为±0.002 cm)测量数据,高清数码相机拍照记录。 相似文献
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杨新文 《中国临床解剖学杂志》2007,25(3):355-355
作者在硕士研究生局部解剖学操作教学指导中,对一老年男尸进行解剖操作时,发现右侧腋动脉分支以及臂丛变异1例,归纳报道如下:1腋动脉分支变异 相似文献
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Summary In addition to the data on intensity-duration curves of the threshold tones, the threshold audiograms are constructed for the different durations of the threshold measuring tone. The durations 0.5; 2; 5; 20; 100 and 850 msec and frequencies 200, 500, 1000, 2000, 3000, and 5000 cps were used. Even when the duration of the testing tone is so short that this tone becomes a noise, the pattern of an audiogram in cases of normal hearing has some resemblance to the typical audiogram. But the great remoteness of the point for 1000 cps from the minimum zone draws attention. As the duration of the testing becomes longer, the audiogram of a person with normal hearing is gradually transforrned from a V-shaped curve with a sharp minimum into a typical curve with an elongated minimum zone, and the point for 1000 cps shifts from the left ascending branch of the audiogram to the center of the minimum zone. Several audiograms are obtained for 2 patients with a partial hearing loss, resulting from growing age, and 1 patient with a severe hearing loss of traumatic origin. Peculiar changes in these audiogram could be clearly seen at the least durations of the testing tone used. The diminishing of absolute threshold, when the tone duration is prolonged from 100 to 850 msec, is less for the listeners with impaired hearing.(Presented by Academician V. N. Chernigovskii) Translated from Byulleten' Éksperimental'noi Biologii i Meditsiny, Vol. 54, No. 10, pp. 21–26, October 1962. 相似文献
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