1. The Male Reproductive System 男性生殖系统

2. The Male Reproductive System
Composion:
Internal genital organs
Gonad-testes
The duct of conveying sperms: includes
Accessory glands
External genital organs
Epididymes 附睾
Ductus deferens 输精管
Ejaculatory duct 射精管
Male urethra 男性尿道
Scrotum 阴囊
Penis 阴茎

3. internal genital organs内生殖器
(一)Gonad –testis 睾丸
Paired, ovoid organs,
Located in scrotum
1.Shape
Superior extremity
Inferior extremity
Anterior borfer
Posterior border
Medial surface
Lateral surface

4. 1.Shape of the testes Superior extremity posterior border
Anterior border
inferior extremity

5. (一)testis 睾丸 2. Structure tunica albuginea 白膜,
mediastinum testis sends numerous fibrous septules into the gland, dividing it into 100～200 testicular lobules睾丸小叶 that contain 2～4 contorted seminiferous tubules 精曲小管 → traight seminiferous tubules 精直小管 →rete testis 睾丸网

6. contorted seminiferous tubules
straight seminiferous tubules
rete testis

7. 1.testis 睾丸 2. Structure Function of epididymis:
efferent ducts of testis睾丸输出小管, 12 ～15 in number
Function of epididymis:
Produces sperm 精子
secrete androgens 睾丸酮

8. (二) Genital ducts 生殖管道 1. Epididymis 附睾 Shape：Comma-shaped,
head of epididymis附睾头
body of epididymis附睾体
tail of epididymis附睾尾
Position：Located on superior extremity and posterior border of testis
Function – the site of accumulation and storage of sperm

9. 2. Ductus deferens 输精管
Muscular tube that transports sperm form epididymis to ejaculatory duct
Four part:
Testicular part 睾丸部
－extends form the tail of epididymis to the superior extremity of testis

10. 2.Ductus deferens 输精管 Spermatic part 精索部
－ form superior extremity of testis to the superficial inguinal ring,----- where the vasectomy is performed
Inguinal part 腹股沟部 －extends form superficial to deep inguinal rings

11. 2.Ductus deferens 输精管
Pelvic part 盆部 －crosses the ureter to reach the base of bladder, terminal part dilates, -----ampulla ductus deferentis 输精管壶腹

12. Spermatic cord 精索
Extends from the superior extremity of testis to the deep inguinal ring
spermatic cord comprise:
Ductus deferens
Testicular artery
Pampiniform plexus of vein 蔓状静脉丛
Nerves and lymphatic vessels
Vestige of vagina process 腹膜鞘突的残余

13. Spermatic cord 精索 These structures are enclosed by 3 layers of tunic
internal spermatic fascia 精索内筋膜,
cremaster 提睾肌
external spermatic fascia 精索外筋膜,

14. 3.Ejaculatory duct 射精管
Formed by union of distal portion ductus deferens and excretory duct of seminal vesicle精囊
Passes through the upper part of prostate and opens into the prostatic part of urethra尿道前列腺部
ejaculatory duct

15. (三) Accessory glands 附属腺体
1.Seminal vesicle 精囊
Paired sacculated, coiled glands
Secrete part of seminal fluid
Located on posterior surface of bladder, lateral to ampulla ductus deferens
seminal vesicle

16. 2.Prostate 前列腺
position
Lies behind pubic symphysis, between neck of bladder and urogenital diaphragm 尿生殖膈
Shape
Chestnut-shaped organ
peostate
Base of prostate
Apex of prostate
Body of peostate
Anterior surfaces
Posterior surfaces－prostatic
sulcus 前列腺沟

17. 2.Prostate 前列腺 Contains of five lobes Anterior lobe Middle lobe
Posterior lobe
Right and left lobes
Capsule of protate前列腺囊
Sheath of protate前列腺鞘 formed by pelvic fascia

18. 3.Bulbourethral gland 尿道球腺
－two small pea-shaped glands, located in the deep transverse muscle of perineum, opens into bulb of urethra 尿道球部
bulbourethral gland

19. External genital organs 外生殖器
(一) Scrotum 阴囊
Pouch of thin skin lying below the root of the penis
Divided into two haves by septum of scrotum, contains testes and epididymis

20. External genital organs 外生殖器
(一) Scrotum 阴囊
The wall of the testis consist of skin and dartos coat 肉膜, a connective tissue layer that contains many smooth muscle fibers which is contineus anteriorly to the scarpa’s fascia of abdomen and posteriorly with Colles fascia of perineum

21. The coverings of testis and spermatic cord
Parietal peritoneum
Transvers fascia
Obliquus internus
abdominis
Trasversus abdominis
Aponeurosis of obliquus externus abdominis
External spermatic fascia
精索外筋膜
Parietal layer
Visceral
layer
Cremastter 提睾肌
Internal spermatic fascia
精索内筋膜
Vaginal
cavity
Tunica vaginalis of testis
睾丸鞘膜

22. (二) Penis 阴茎 division: Consists of root 阴茎根 body 阴茎体 glans penis 阴茎头
Cavernous body of penis 阴茎海绵体: 2
Cavernous body of urethra 尿道海绵体: 1

23. (二) Penis 阴茎 Skin－thin and loose Prepuce of penis 阴茎包皮
Frenulum of prepuce
包皮系带

24. (三) Male urethra 男性尿道 Three parts
Prostatic part 前列腺部 －lies within the prostate
Membranous part 膜部 – lies within the urogenital diaphragm surround by the sphincter of urethra
Cavernous part 海绵体部－transverse the all length of cavernous body of urethra

25. (三) Male urethra 男性尿道 Posterior urethra 后尿道 Anterior urethra 前尿道–
prostatic part
membranous part
Anterior urethra 前尿道–
cavernous part

26. (三) Male urethra 男性尿道 Three constrictions Three enlarged parts
internal urethral orifice
membranous part
external orifice of urethra
Three enlarged parts
At prostatic part
At bulb of urethra
At navicular fossa of urethra

27. (三) Male urethra 男性尿道 Two curvatures
Subpubic curvature 耻骨下弯－concave upward
Prepubic curvature 耻骨前弯－concave downward

28. Within prostatic part (三) Male urethra 男性尿道 Urethral ridge 尿道嵴
Seminal colliculus精阜
Prostatic utricle 前列腺小囊
orifices of the ejaculatory ducts

29. parietal layer visceral layer vaginal cavity 鞘膜腔
gubernaculum of tastis睾丸引带，
vagianal process腹膜鞘突 。
vagianal ligament鞘韧带 ，
tunica vaginalis of tastis睾丸鞘膜.
parietal layer
visceral layer
vaginal cavity 鞘膜腔

30. ampulla ductus deferentis 输精管壶腹

31. Spermatic part 精索部