THE CEREBRAL ARTERIAL CIRCLE AND VERTEBRAL-BASILAR ARTERY OF CAMEL(Bactrianus Camelus)
- VernacularTitle:双峰驼的大脑动脉环和椎基底动脉
- Author:
Weihua WANG
- Publication Type:Journal Article
- Keywords:
Cerebral arterial circle;
Vertebral-basilar artery;
Bactrianus Camelus
- From:
Acta Anatomica Sinica
1955;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
By means of the introarterial-injected preparations with oil dye(in some caseswith 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 theinternal carotid artery intracranial segments and the caudal communicating arteriesas well as their branches of both sides,respectively.66.7 per cent of the caudalcommunicating arteries originate from the carotid rete,33.3 per cent from the inter-nal carotid artery intracranial segment.Anastomosis was found between these twovessels in 46.7 per cent and 20.0 per cent has no communicating branches.This isdifferent 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 thecaudal segment of basilar artery.2.After receiving the branches of occipital artery,the vertebral artery entersinto the cranial cavity and divides to form the cerebral-spinal circle together withbranches on the opposite side.The circle gives rise to the caudal segment of basilarartery and ventral spinal artery.3.The course of the basilar artery differs in no way from the usual patternfound in other mammals,but it is of interest to note that the calibre of this vesselindicate 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 cerebellararteries,caudal cerebellar arteries,postpone branches and medullary branches.
