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Journal of the South African Veterinary Association

versão On-line ISSN 2224-9435

Resumo

YOLDAS, A; OZMEN, E  e  OZDEMIR, V. Macroscopic description of the coronary arteries in Swiss albino mice (Mus musculus). J. S. Afr. Vet. Assoc. [online]. 2010, vol.81, n.4, pp. 247-252. ISSN 2224-9435.

A total of 25 (13 male, 12 female) adult, healthy Swiss albino mice were used to investigate the origin, course and anastomoses of coronary arteries. Coloured latex was injected into the aortic arch to enable these arteries to be clearly discerned. A. coronaria sinista was larger than A. coronaria dextra. It was divided into a Ramus interventricularis paraconalis and a Ramus circumflexus sinister. However, in 2 specimens, the septal ramus, was observed to stem directly from the left coronary artery, and only 1 ventricular branch arose from the left circumflex. The collateral branches of the paraconal interventricular ramus had a larger diameter and more extensive distribution was observed in these specimens. The A. coronaria dextra was divided into a Ramus septalis and Ramus circumflexus dexter. The Ramus interventricularis subsinuosis was not detected in this study. The ventricular branches of the left coronary artery run intramyocardially whereas the branches of the right coronary artery course subendocardially.

Palavras-chave : coronary artery; heart; mice; subgross anatomy.

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