Gonad- testis睾丸 General features Paired, smooth, ovoid male reproductive organ, slightly flattened anteroposteriorly Located in scrotum Produces sperm and secretes androgens
Gonad – testis 睾丸 General features ◼ Paired, smooth, ovoid male reproductive organ, slightly flattened anteroposteriorly ◼ Located in scrotum ◼ Produces sperm and secretes androgens
Gonad- testis睾丸 Structures of testis Tunica albuginea白膜: a tough fibrous coat Septula testis睾丸小隔: numerous fibrous into the gland Lobules of testis睾丸小叶: contain the contorted sem iniferous tubules精曲小管 Striaght seminiferous tubules精直小管 Rete testis睾丸网 Efferent ductules of testis睾丸输出小管 open into the head of the epididymis
Gonad – testis 睾丸 Structures of testis ◼ Tunica albuginea 白膜: a tough fibrous coat ◼ Septula testis 睾丸小隔: numerous fibrous into the gland ◼ Lobules of testis 睾丸小叶: contain the contorted seminiferous tubules 精曲小管 ◼ Striaght seminiferous tubules 精直小管 ◼ Rete testis 睾丸网 ◼ Efferent ductules of testis 睾丸输出小管 open into the head of the epididymis
Testis Seminiferous tubules
Testis Seminiferous tubules
Epididymis附睾 Comma-shaped, with head body and tail of epididymis Located on superior extremity and posterolateral aspect of testis Contains tortuous canal that extends from testis to ductus deferens in spermatic cord Function -the site of accumulation and storage of sperm
Epididymis 附睾 ◼ Comma-shaped, with head, body and tail of epididymis ◼ Located on superior extremity and posterolateral aspect of testis ◼ Contains tortuous canal that extends from testis to ductus deferens in spermatic cord ◼ Function – the site of accumulation and storage of sperm
Ductus deferens輪精管 a thick-walled muscular tube approximately 45 cm in length It transports sperm form epididymis to ejaculatory duct
Ductus deferens 输精管 ◼ A thick-walled muscular tube approximately 45 cm in length. ◼ It transports sperm form epididymis to ejaculatory duct