The Penile Cavernous System and Its Morphological Changes in the Erected State in the Dog

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  • イヌの陰茎の海綿体系について
  • イヌ ノ インケイ ノ カイメン タイケイ ニ ツイテ エイブン

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Abstract

With the aid of acrylic resin casting method and by scanning electron microscopy, the cavernous system of the canine penis was studied in comparison of the configuration of the erected penis with that of the non-erected penis. The glans was especially well developed, consisting of the pars longa glandis and the bulbus glandis. On the contrary, the corpus cavernosum penis was poorly developed. In all specimens observed, the glans was provided with a vein (Christensen's deep vein of the glans) which was located between the pars longa glandis and the bulbus glandis. In the erected condition of the penis, the glans remarkably expanded accompanied by proportional engorgement of its cavernous spaces, but the corpus cavernosum penis did not expand regardless of swelling of its cavernous spaces. Many circular furrows were present in the cavernous spaces of the erected glans. These furrows were considered to be images of the collagenous bundles in the trabeculae of the glans.

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