性器官-女性性器官 The Sex Organs - The Female Sex Organs
|
一些同源结构
|
男女性系统的一些同源结构
|
在男婴出生之前,“雄性”激素-睾丸激素将其原初未分化的胚胎转化,引导发育成具有男性性器官的男胎。而在女胎,在这个发育期缺乏睾丸激素,使得原始胚胎“自动”长成具有女性性器官的女胎。但是,既然男女的性器官由相同的胚胎细胞团衍生而来,它们相互对应,或者用科学语言来说,它们是“同源的”。
|
(Female)女性
(Ovaries)卵巢
(Urethra)尿道
[Labia
minora
(minor
lips)]大阴唇
[Labia
majora
(major
lips)]小阴唇
(Clitoris)阴蒂
(Bartholin's
glands)前庭大腺
Paraurethral
glands
("female
prostate")尿道旁腺
|
|
男性(Male)
睾丸(Testicles)
尿道前列腺部(Prostatic
urethra)
尿道阴茎部(Urethral
tube
of
penis)
阴囊(Scrotum)
阴茎(Penis)
尿道球腺(Cowper's
glands)
前列腺(Prostate)
|
|
|
|
Some Homologous Structures
|
Some Homologous Structures in the Female and Male Sexual Systems
|
Before a baby boy is born, the "male" hormone testosterone transforms his originally undifferentiated embryo, leading to the development of a male body with male sex organs. In case of a baby girl, the absence of testosterone at this stage lets the embryo grow "automatically" into a female body with female sex organs. However, since both male and female sex organs derive from the same embryonic cell mass, they still correspond to each other or, in scientific language, are "homologous."
|
Female
Ovaries
(Urethra
Labia
minora
(minor
lips)
Labia
majora
(major
lips)
(Clitoris
(Bartholin's
glands
Paraurethral
glands
("female
prostate")
|
|
Male
Testicles
Prostatic
urethra
Urethral
tube
of
penis
Scrotum
Penis
Cowper's
glands
Prostate
|
|
|
|