Download 男生殖系统

The Male Reproductive System
男性生殖系统
The Male Reproductive System
Composion:

Internal genital organs
Gonad-testes
The duct of conveying sperms: includes
Epididymes 附睾
Ductus deferens 输精管
Ejaculatory duct 射精管
Male urethra 男性尿道
Accessory glands

External genital organs
Scrotum 阴囊
Penis 阴茎
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
1.Shape of the testes
Superior
extremity
posterior
border
inferior
extremity
Anterior
border
(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
contorted
seminiferous
tubules
straight
seminiferous
tubules
rete testis
1.testis 睾丸
2. Structure

efferent ducts of testis睾丸
输出小管, 12 ～15 in number

Function of testis:
Produces sperm 精子
secrete androgens 睾丸酮
(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
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
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

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

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
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,
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
(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
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
Base of prostate
peostate
Apex of prostate
Body of peostate
Anterior surfaces
Posterior surfaces－prostatic
sulcus 前列腺沟
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
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
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
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
The coverings of testis and spermatic cord
Parietal peritoneum
Transvers fascia
Trasversus abdominis
Obliquus internus
abdominis
Aponeurosis of obliquus
externus abdominis
External spermatic fascia
精索外筋膜
Cremastter 提睾肌
Parietal layer
Visceral
layer
Internal spermatic fascia
精索内筋膜
Tunica vaginalis of testis
睾丸鞘膜
Vaginal
cavity
(二)

Penis 阴茎
division:
root 阴茎根
body 阴茎体
glans penis 阴茎头
• Consists of
Cavernous body of
penis 阴茎海绵体: 2
Cavernous body of
urethra 尿道海绵体: 1
(二) Penis 阴茎
Skin－thin and loose
Prepuce of penis 阴茎包皮
Frenulum of prepuce
包皮系带
(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
(三)
Male urethra 男性尿道
Posterior urethra 后尿道
prostatic part
membranous part
Anterior urethra 前尿道–
cavernous part
(三)
Male urethra 男性尿道
Three constrictions



internal urethral orifice
membranous part
external orifice of
urethra
Three enlarged parts



At prostatic part
At bulb of urethra
At navicular fossa of
urethra
(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
(三)
Male urethra 男性尿道
Within prostatic part
Urethral ridge 尿道嵴
Seminal colliculus精阜
Prostatic utricle 前列腺小囊
orifices of the ejaculatory ducts
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
ampulla ductus
deferentis 输精管壶腹
Spermatic part 精索部