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CNS Vasculature - Anatomy & Physiology (view source)
Revision as of 13:44, 6 March 2011
, 13:44, 6 March 2011→Species Differences
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==Species Differences==
==Species Differences: Blood Supply==
The [[#Vasculature|blood supply to the brain]] has major differences depending on species. Across all species, there are variations in four major potential channels to facilitate blood supply to the Circle of Willis. As mentioned above, these are;
The [[#Vasculature|blood supply to the brain]] has major differences depending on species. Across all species, there are variations in four major potential channels to facilitate blood supply to the Circle of Willis. As mentioned above, these are;
*Internal carotid artery
*Internal carotid artery
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In the Ox the maxillary rami containing the rete mirabile are associated with the cavity of the frontal sinus which helps to facilitate cooling of the blood.
In the Ox the maxillary rami containing the rete mirabile are associated with the cavity of the frontal sinus which helps to facilitate cooling of the blood.
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==Species Differences: Regions of Blood Supply==
===Dog and Man===
In dog and man the internal carotid artery supplies approximately 3/4 of the cerebrum whilst the vertebtral artery supplies the very caudal aspect of the cerebrum, the cerebellum, medulla oblongata and brain stem.
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===Sheep and Cat===
Maxillary blood (via the maxillary rami) supplies the whole of the cerebrum, the cerebellum and the medulla oblongata. vertebral blood supplies structures caudal to the cerebellum and the brain stem.
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===Ox===
Due to the higher number of rami in the ox, maxillary and vertebral blood are able to supply the whole brain with no clear distinctions in supply area as seen in the species above.
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[[Category:Nervous_System_-_Anatomy_&_Physiology]] [[Category:To_Do_-_A&P]]
[[Category:Nervous_System_-_Anatomy_&_Physiology]] [[Category:To_Do_-_A&P]]