摘要
本文用动脉注射红色油画颜料和红色乳胶液的方法,研究了15例双峰驼的大脑动脉环和椎基底动脉。1.大脑动脉环由前、后两部分构成。分别由颈内动脉颅内段和后交通动脉及其分支连接而成。后交通动脉自硬膜外异网发出的占66.7%,自颈内动脉颅内段发出的占33.3%。在两条动脉之间,有吻合支的占46.7%,无吻合支的占20.0%,这与其他哺乳动物不同。颈内动脉颅内段和后交通动脉的平均管径,分别为0.216±0.057和0.178±0.056cm。从大脑动脉环上发出的主要血管,有大脑前动脉、大脑中动脉、大脑后动脉和基底动脉前段。2.椎动脉接受枕动脉的吻合支后,进入颅腔,分支与对侧同名动脉构成脑脊环,并发出基底动脉后段和脊髓腹侧动脉。3.基底动脉的位置与其他哺乳动物相似。但基底动脉的管径变化表明,基底动脉的血流远离大脑动脉环和脑脊环。从基底动脉上发出的主要血管有小脑前动脉、小脑后动脉、脑桥支和廷髓支。
By means of the introarterial-injected preparations with oil dye(in some cases
with neuprene latex),the cerebral arterial circle and vertebral-basilar artery of camel
(Bactrianus Camelus)were studied in 15 cases.The results obtained are as follows:
1.The cerebral arterial circle is composed of two parts,and is formed by the
internal carotid artery intracranial segments and the caudal communicating arteries
as well as their branches of both sides,respectively.66.7 per cent of the caudal
communicating arteries originate from the carotid rete,33.3 per cent from the inter-
nal carotid artery intracranial segment.Anastomosis was found between these two
vessels in 46.7 per cent and 20.0 per cent has no communicating branches.This is
different from other mammals.The average diameters of the two vessels are 0.216+
0.057 cm and 0.178+0.056 cm,respectively.The circle gives the following vessels:
rostral cerebral arteries,middle cerebral arteries,caudal cerebral arteries,and the
caudal segment of basilar artery.
2.After receiving the branches of occipital artery,the vertebral artery enters
into the cranial cavity and divides to form the cerebral-spinal circle together with
branches on the opposite side.The circle gives rise to the caudal segment of basilar
artery and ventral spinal artery.
3.The course of the basilar artery differs in no way from the usual pattern
found in other mammals,but it is of interest to note that the calibre of this vessel
indicate the flow of the blood away the cerebral arterial circle as well as the cere-
bral-spinal circle.The vessels arisen from the basilar artery are rostrol cerebellar
arteries,caudal cerebellar arteries,postpone branches and medullary branches.
出处
《解剖学报》
CAS
CSCD
北大核心
1989年第3期240-244,共5页
Acta Anatomica Sinica
关键词
双峰驼
大脑动脉环
椎基底动脉
Cerebral arterial circle
Vertebral-basilar artery
Bactrianus Camelus
