occipital ring 中文意思是什麼
occipital ring
解釋
頸環-
Measurements for the following anatomical structures were obtained with the aid of a microscope, the distance between mastoid process and transverse process of the atlas, occipital condyle, and superior lateral loop ; the distances between the midline and the v3 at three levels : 1 ) the distal ( dural ) ring ; 2 ) the intersection with the anterior ramus of the c - 2 ; and 3 ) the upper level of the transverse foramen of the atlas ; the diameter of v3h at the origin of the muscular artery and at the sites of penetrating the dural ring ; the width of the v3 at the intersection with the anterior ramus of the c - 2 and at the sites of penetrating the transverse foramen of the atlas
V _ 3h和v _ 3v各有兩個分支： v _ 3h分出肌動脈支和腦膜后動脈支； v _ 3v分出肌動脈支和根肌動脈支，第一、二脊神經發出的前後支分別與它們又毗鄰關系。通過手術顯微鏡測量下述解剖結構：乳突尖與環椎橫突尖、枕髁外側緣、 v _ 3上外側袢的距離；椎動脈v _ 3段在穿硬膜環、與第二頸神經前支交叉、環椎橫突孔上緣三處與中線的距離； v _ 3h在發出肌支處和穿硬膜天渾醫科大學碩士研究主學位論文環處的直徑； v3v在與第二頸神經前支交叉處和穿環椎橫突孔處的直徑。
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