Figure 4. Photographs of the human penis. (A) At the level of the retrocoronal sulcus. The neurovascular bundle lies intimately on the dorsal aspect of the tunica albuginea (TA). The left dorsal artery (LDA) and the right dorsal artery (RDA) are located at the 3 and 9 o'clock positions, respectively. Note that the distribution of veins looks like a battery of gunshots. The number of veinlets is numerous and may be as high as 29 clinically. The medium septum is incomplete and fenestrated, whereas the intracavernosal pillar (ICP) is arranged laterally. (B) In the mid-pendulous portion. Each dorsal artery is sandwiched with the medial para-arterial vein (MPAV) and lateral para-arterial vein (LPAV), respectively. The central-positioned deep dorsal vein (DDV) is sandwiched with the left cavernosal vein (LCV) and right cavernosal vein (RCV). (C) Cross section at the level of penile hilum. The deep-seated RCV and LCV lie closely to the tunica. The RDA and LDA are thicker in its wall. The medium septum becomes complete earlier. (D) A laterodorsal view of the penis. The DDV trunk (asterisk) is pulled upward with a green suture, whereas the CV remains deeper position within a different perivascular sheath all the way to the glans penis distally and to the infrapubic angle proximally. Note the pubic rami (white diamond). (E) Dorsal view of the penis in another subject. The DDV and CV are tagged with a green suture, whereas the arteries are encased with a reddish suture and the nerves are tagged with a yellow suture. It is clear in the picture that DDV existing bifurcation (asterisk) and CV are separate vessels both at distally and proximally (bottom). The skin level is indicated (arrows). Two of the entering vessels of the Santorini's plexus are retracted with blue sutures.