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Biology Articles » Anatomy & Physiology » Anatomy, Animal » Anatomic study on the arterial supply in the caprine placenta

Anatomic study on the arterial supply in the caprine placenta



NEVES, Williams Costa, MIGLINO, María Angélica, ARRIVABENE, Mônica et al.

Abstract : The three-dimensional analysis of the arterial ramification of the umbilical cord was studied in placenta of 35 mixed breed adult goats (originated from the State of Piauí, Brazil), after intravascular injection of Neoprene 630 and vinyl acetate followed by corrosion. Plastic casts of the vascular network made it possible to verify that in 17 single gastations the artery reaches the pregnant uterine horn gives rise to 12 colateral branches and 2 terminal ones. The artery of the non pregnant uterine horn showed, an average of 19 colateral and 2 terminal branches. In 13 samples of gemelar gestations, the artery of the right uterine horn directed to the uterus body had 8 colateral and 2 terminal branches average. The artery of the right uterine horn directed to the horn's extremity, had an average of 11 colateral and 2 terminal branches. The artery of the left uterine horn directed to the uterus body, had 9 colateral and 2 terminal branches on average. The artery of the left uterine horn directed to the horn's extremity, originated a mean of 10 colateral and 2 terminal branches. At the cotyledons level, the arteries adopted a marginal course forming a true vascular "loop" from which smaller and more perpendicular branches arise, which by their turn give rise to multiple terminal arborizations irrigating the cotyledon

Keywords: Anatomy; Placenta; Caprine; Vascularizaction

Rev. chil. anat., 1997, vol.15, no.2, p.193-199. Full text available in Spanish.

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