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The blood vascular system in the head of the herring gull ( Larus argentatus )
Author(s) -
Midtgård Uffe
Publication year - 1984
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051790203
Subject(s) - larus , biology , herring gull , anatomy , external carotid artery , herring , cerebral arteries , cerebral circulation , carotid arteries , blood supply , medicine , fishery , fish <actinopterygii> , surgery
The structure and development of the blood vascular system in the head of the herring gull ( Larus argentatus ) have been studied using injection techniques and histological sections. Three different but interconnected divisions of the arterial system are recognized in the adult: the cerebral carotid artery system, the external ophthalmic artery system, and the external carotid artery system. Embryologically, the arterial system is characterized by changes in the relative development of these three divisions; the cerebral carotid system being the most prominent in the first half of the embryonic period. The venous system is divided into two parts, the rostral cephalic system and the caudal cephalic system, which drain separate regions of the head. The Rete ophthalmicum, which is an arteriovenous network associated with the external ophthalmic artery system, can be identified from the fifth day of incubation, and its development appears to be coupled with changes in the arterial supply to the eye. The possibility of a homology between the Rete ophthalmicum of birds and the Rete caroticum of mammals is briefly discussed.