Karim Khalil

Citation:

karim Khalil, M. (2013).  Comparative anatomical studies on the vascular architecture of the blood vessels of the testis of some farm animals. (Medhat A. Elayat, Fouad M. Farag, Hamdy R. Mohamed, Ed.).

Thesis Type:

Abstract:

ABSTRACT

(Key words: Angioarchitecture, Testicular artery, Testes)

The topography and morphometry of the testicular artery and pampiniform plexus, in the spermatic cord and testis were cited. 150 Samples were collected from different species of farm animals for this study. Different masses (Urographine®, Latex and Epoxy) were injected either through the testicular artery or the pampiniform plexus. The coils of the testicular artery forming a cone-like structure with its base fixed to the head of the gonad. The variations in the vascular Pattern of the testis among farm animals have showed a high degree of species specificity. The funicular part of the testicular artery gave off two epididymal branches to the head and tail of epididymis before it became marginal artery. The architectural pattern of the pars marginalis was classified into four patterns in farm animals. The mean values of the lengths, diameters and the degree of the vascular convolutions were recorded and statistically tabulated. The increase in the length of the testicular artery with increase in the size of the testes played a great role in the degree of complexity of the architectural vascular pattern among the species understudy. The degree of complexity is affected by the number of coils formed by the vessel. The testicular artery appears more complex in buffalo and ram than camel, donkey and rabbit. The pampiniform plexus originated from marginal plexus which gathered blood from the intraparenchymal network of veins. The coiling pattern of the artery and density of the veins in the pampiniform plexus was varied in different species of animals and played a major role in the heat regulation mechanism of the testis.