TITLE

THE DISTRIBUTION OF THE VASA VASORUM IN THE ABDOMINAL AORTA AND THE VENA CAVA INFERIOR IN DOGS

AUTHOR(S)
Nylander, G.; Olerud, S.
PUB. DATE
December 1960
SOURCE
Angiology;Dec1960 Part 1, Vol. 11 Issue 6, p522
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
1. A microangiographic investigation has been carried out on eight young dogs, making possible stereoscopic inspection of the vasa vasorum of the abdominal aorta and the inferior caval vein. 2. The vasa vasorum in the wall of the aorta followed a course mainly parallel to the longitudinal direction of the vessel wall. The branching always occurred at oblique angles and formed a very richly developed anastomotic net, rhomboids being the characteristic unit of this vascular pattern. 3. The vessels divided stepwise toward the lumen. At every stage the above-mentioned vascular pattern was repeated and splitting into capillaries occurred. 4. The intima and the inner part of the tunica media lacked vascular structures. 5. The arteries going directly from the aortic lumen never ramified at once, but penetrated the vessel wall toward the adventitia. From there they turned and divided .stepwise in toward the lumen as described above. 7. Every artery was accompanied by a corresponding vein. 7. The vascular arrangement of the vena caval wall was of a different type. Large stem arteries ran transversely to the course of the main vein. Branching off from these long, straight arteries followed the long axis of the vein wall �railway track arteries.� Very few anastomes could be demonstrated between these arteries which often had the character of end arteries. 8. The �railway track arteries� could be found in every stage of the vein wall depth and ramified in, as a rule, two capillary branches. 9. Only a very thin layer next to the vein lumen was devoid of nutrient vessels. 10. Every artery in the vein wall was followed by a corresponding vein. 11. The vascular arrangements of the nutrient vessels in the aortic and caval vein walls have been discussed in relation to hemodynamic and metabolic conditions.
ACCESSION #
16365100

 

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