生殖系统解剖课件05生殖系统.pptVIP

The Reproductive System 生殖系统 山东大学医学院 解剖教研室 李振华 The Reproductive System Composition Internal genital organ 内生殖器 Gonads 生殖腺 (sex glands) －manufacture the sex cells an secrete the sex hormones. Genital ducts 生殖管道 －transport the sex cells from the site of production into site fertilization Accessory glands 附属腺 －secrete the fluid External genital organ 外生殖器 Male Reprodutive System 男性生殖系统 Male Reproductive System Male internal genital organs Gonad –testis 睾丸 Genital ducts Epididymis 附睾 Ductus deferens 输精管 Ejaculatory duct 射精管 Male urethra 男尿道 Accessory glands Seminal vesicle 精囊 Prostate 前列腺 Bulbourethral gland 尿道球腺 Male external genital organs Scrotum 阴囊 Penis 阴茎 Male internal genital organs 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 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 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 输精管 A thick-walled muscular tube approximately 45 cm in length. It transports sperm form epididymis to ejaculatory duct Ductus deferens 输精管 1. Testicular part 睾丸部 －extends form the tail of epididymis to the superior extremity o