NUTRIENT ARTERIES OF THE LUMBAR VERTEBRAE IN MAN
- VernacularTitle:人体腰椎骨的营养动脉
- Author:
Xi ZHU
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1953;0(01):-
- CountryChina
- Language:Chinese
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Abstract:
1.The nutrient arteries of the lumbar vertebrae were studied on 55 fresh cadaversof different ages by dissection,clearing,casting,radiography and histologicalexamination.2.The nutrient arteries of the lumbar vertebral body enter both the ventrolateraland dorsal surfaces of the body.They can be divided into two types:central andperipheral.The central branches reach the center of the body.While the peripheralbranches supply the outer collar of the body.In number,the former is 1 to 3(averagenumber 2.24?0.09)and that of the latter is 1 to 2(average number 1.47?0.04).The peripheral branches are numerous and inconstant.On the ventrolateral surface theperipheral branches have the average number of 7.83?0.21 and 5.67?0.11 on thedorsal surface.The peripheral branches of the ventrolateral nutrient arteries increaseobviously as age advances.On the contrary,the central branches of the ventrolateralnutrient arteries decrease as the ordinal number of the lumbar vertebrae increases.3.The central branches lie in the middle third zone of the body.They havestraight and less branched stem,preterminal coils and centrifugal terminal brancheswhich spread radially to the upper and lower vertebral end-plates of the body.In theadult,the terminals of both central and peripheral branches anastomose each other toform a dense arterial network.4.In the hyaline cartilage,there are cartilaginous canals which contain 1～2 smallveins and arteries,a number of capillaries and a little of amount of the connectivetissue.The small artery is usually only one in number.5.The nutrient arteries of the arch are mainly:to the pedicle of arch(84.53?1.57%),to the mammillary process(49.45?2.34%),and to the lamina(47.17?2.17%).6.At no age have we been to detect any blood supply for the deep part of theannulus fibrous and nucleus pulposus.
