Atlas on the Human Testis by Davor Ježek download in ePub, pdf, iPad
From the rete testis there emerge between four and twelve efferent ducts or vasa efferentia, which leave the testis, and pass into the upper part of the epididymis. Here behind it, partly hidden, is the epididymis, through which spermatozoa pass to reach the ductus deferens. Spermatozoa mature as they pass along it. The tail of the epididymis curls around, and becomes continuous with the ductus deferens, which passes upwards to enter the spermatic cord.
This is the surface of the testis itself. To see the testis and its surrounding layers more clearly, we'll take everything else out of the picture.
We'll draw the spermatic fascia aside. Violations are liable to prosecution under the respective Copyright Law. Here's the spermatic cord. The duct, which is extremely convoluted, makes up almost all the bulk of the epididymis. We'll go to another specimen, to see more of the testis.
Here at the tail of the epididymis the convolutions of the duct are quite visible. The thin skin of the scrotum is continuous with the skin of the lower abdominal wall, the upper thigh, and the perineum. In the head of the epididymis the efferent ducts unite to form one tube, the duct of the epididymis. Here's the testis, protected by a number of covering layers. The testes are contained in the scrotum, the pendulous sac that keeps them at the low temperature needed for spermatogenesis.
This work is subject to copyright. Like peritoneum, it has an outer parietal layer, and an inner visceral layer that covers the testis itself.
The tunica vaginalis creates a fluid-filled envelope around the testis. The spermatic cord passes upwards, then laterally to enter the inguinal canal, which is here. Inside it is an inner membranous envelope, the tunica vaginalis, which we've already opened. The publisher makes no warranty, express or implied, with respect to the material contained herein.
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