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Male uro-genital system

One can observe, laying on the quadratus lumborum, the two kidneys from which the two ureters descend to the urinary bladder (whose left half has been removed). The two testes are visible. The right one appears through a break on its coverings; among these we recognize, on the surface, the cremaster muscle and, below it, the internal spermatic fascia and then the tunica vaginal is.

The left testis is shown without coverings and, since a part of the tunica albuginea has been removed, it also exhibits the wrinkled appearance of its parenchyma due to its tubular structure; on the top of the testis we can see the epididymis whose head is clearly formed by the coni vasculosi. Moreover, to the left, the components of the spermatic cord are demonstrated. The testicular artery descends from the aorta and as it gets nearer the testicles divides into its branches; the veins of the pampiniform plexus converge to form the testicular vein which on the left joins the left renal vein (we can see the right one entering the inferior vena cava); the ductus deferens which from the tail of the epididymis goes upwards and then, curving medially, hides behind the seminal vesicle.

Originating from the latter we can observe the ejaculatory ducts which pass through the prostate gland (here amputated for the most part) and open into the urethra at the colliculus seminal is. Finally we can see the penis which has been sectioned longitudinally to show the urethra that transverses its whole length. Over the urethra there is the pectiniform septum pierced by the small arteries linking the cavernous spaces of the corpora cavernosa. On the dorsum of the penis there is the deep dorsal vein.

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