性器官-男性性器官
The Sex Organs - The Male Sex Organs |
同源性器官的結構
Some
Homologous Structures |
男女性系統的一些同源結構
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在男嬰出生之前,“雄性”激素-睾丸激素將其原初未分化的胚胎轉化,引導發育成具有男性性器官的男胎。而在女胎,在這個發育期缺乏睾丸激素,使得原始胚胎“自動”長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細胞團衍生而來,它們相互對應,或者用科學語言來說,它們是“同源的”。 |
(Female)女性
(Ovaries)卵巢
(Urethra)尿道
[Labia
minora
(minor
lips)]大陰唇
[Labia
majora
(major
lips)]小陰唇
(Clitoris)陰蒂
(Bartholin's
glands)前庭大腺
Paraurethral
glands
("female
prostate")尿道旁腺
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男性(Male) 睾丸(Testicles)
尿道前列腺部(Prostatic
urethra)
尿道陰莖部(Urethral
tube
of
penis)
陰囊(Scrotum)
陰莖(Penis)
尿道球腺(Cowper's
glands)
前列腺(Prostate)
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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")
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|
Male Testicles
Prostatic
urethra
Urethral
tube
of
penis
Scrotum
Penis
Cowper's
glands
Prostate
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