Casey W C, Woods R W
Urology. 1982 Mar;19(3):284-6. doi: 10.1016/0090-4295(82)90500-3.
A sphincter-like structure was found at the base of the penis at the division of the crura surrounding the deep dorsal vein and, in instances of paired veins, around both veins. The deep dorsal vein in this anatomic region does not have a clear-cut adventitia or external wall. The venous lumen is stellate in cross sections, with much surrounding smooth muscle, nerve fibers, and connective tissue blending into the penile tissue external to the tunica albuginea. Further microscopic and gross studies of the deep dorsal vein in 10 specimens revealed consistently smooth muscle "polsters" the entire length of the vein, with the fibers directed in a longitudinal fashion. Photomicrographs of this structure are shown, and some theoretical notions about the function of this peculiar-appearing anatomic structure are described.
在阴茎根部，围绕深背静脉的脚部分叉处发现了一种类似括约肌的结构，在成对静脉的情况下，则围绕两条静脉。该解剖区域的深背静脉没有清晰的外膜或外壁。静脉腔在横切面上呈星状，周围有大量平滑肌、神经纤维和结缔组织融入白膜外部的阴茎组织中。对10个标本的深背静脉进行的进一步微观和大体研究显示，静脉全长始终存在平滑肌“隆起”，纤维呈纵向排列。展示了该结构的显微照片，并描述了关于这种外观奇特的解剖结构功能的一些理论观点。
