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1 Tunica vaginalis testis. Double-layered serous covering of the testis, a remnant of the vaginal process of the peritoneum. A

2 Parietal layer. Lamina parietalis [[ peri-orchium]]. External layer of the serous tunica vaginalis testis. A

3 Visceral layer. Lamina visceralis [[eporchium]]. Layer of the tunica vaginalis testis that attaches superiorly to the testis. A

4 Superior ligament of epididymis. Lig. epid-idymidis superius. Reflected fold of the tunica vaginalis testis located superiorlyatthe headof the epididymis. A

5 Inferior ligament of epididymis. Lig.epididy-midis inferius. Reflected fold ofthe tunica vaginalis testis situated inferiorly at the tail of the epididymis. A

6 Sinus of epididymis. Sinus epididymidis. Serous cleft between the testis and epididymis. It is accessible laterally and is bordered above and below by the superior and inferior ligaments of the epididymis. A

7 Descent of testis. [[Descensus testis]]. Downward migration of the fetal testis during the last weeks of pregnancy. It descends from the peritoneal cavity into the scrotal sac via the inguinal canal.

8 [[Gubernaculum testis]]. Fetal connective tissue band which arises from the caudal gonadal fold and guides the testis during its descent.

9 Genitoinguinal ligament. [[Lig. genitoingui-nale]]. Embryonic precursor of the guber-naculum testis.

10 Prostate. Prostata (glandula prostatica). Chest-nut-sizedorganconsistingof30-50tubulo-alve-olarglands.Situatedbelowtheurinarybladder,it is penetrated by the urethra. BCD

11 Base of prostate. Basis prostatae. Part of the prostate fused with the urinarybladder. B

12 Apex of prostate. Apex prostatae. Portion of prostate directed downward and forward and containing the urethra. B

13 Anterior surface. Facies anterior. Surface of the prostate facing the symphysis. B D

14 Posterior surface. Facies posterior. Surface of the prostate facing the rectum. B

15 Inferolateral surface. Facies inferolateralis.Sur-face of the prostate directed downward and lateral. D

16 Right/left lobe. Lobus (dexter/sinister). Part of the prostate arising from the caudal anlage. B D

17 Isthmus of prostate. Isthmus prostatae. Median partofthe prostate located in frontofthe urethra and connecting the right and left lobes. It is devoid ofglands and possesses a fibromuscular stroma. D

18 Middle lobe. [Lobus medius]. Prostatic lobe situated between the ejaculatory duct and the urethra. It tends to undergo hormone-induced hypertrophy in the elderly, thus closing the urethral canal like a valve. B D

Feneis, Pocket Atlas of Human Anatomy © 2000 Thieme

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