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== Testes ==
 
== Testes ==
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* Two testes carried externally in the scrotum.
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=== Introduction ===
* Sexual maturity is usually reached during the first spring after birth at about 4-8 months of age.
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* Once testes have descended, the inguinal canal closes and they are not able to be retracted.
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Two testes are carried externally in the scrotum. Once testes have descended, the inguinal canal closes and they are not able to be retracted. Spermatogenic activity increases within the semniferous tubules of the testes from December-July. Testes become noticeably enlarged in preparation for the breeding season (March-August).
* Spermatogenic activity increases within the semniferous tubules of the testes from December-July.
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** Testes become noticeably enlarged in preparation for the breeding season (March-August).
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=== Structural Anatomy ===
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* Epididymis is composed of a mass of convoluted spermatic duct.
 
* Epididymis is composed of a mass of convoluted spermatic duct.
 
** Divided into head, body and tail on the dorsal aspect of the testis as it lies in the scrotal sac.
 
** Divided into head, body and tail on the dorsal aspect of the testis as it lies in the scrotal sac.
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** Passes cranially on the dorsal aspect of the testes as the ductus deferens.
 
** Passes cranially on the dorsal aspect of the testes as the ductus deferens.
 
*** Medial to the body of the epididymis.
 
*** Medial to the body of the epididymis.
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=== Blood Supply ===
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* Ductus deferens is accompanied by the deferent artery.
 
* Ductus deferens is accompanied by the deferent artery.
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=== Histology ===
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== Accessory Glands ==
 
== Accessory Glands ==
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