External morphology of the erect glans penis of the dog

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Abstract
The external morphology of the erect glans penis was studied and compared to that of the nonerect organ. Morphological changes that occur with tumescence and detumescence were also reported. Some distinct parts of the erect pars longa glandis which are not distinguished in classical nomenclature are described and labeled. These structures are the urethral process, corona glandis and collum glandis. These distinct morphological areas coincide with areas which seem to be functionally distinct in both the erect and nonerect glans penis. The implications that these observations may have for considerations of comparative anatomy of the external male genitalia are discussed.

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