Human are unisexual with separate sexes -
male and female
Malereproductivesystem
Reproductive organs
Mpi
bladder
primary sex
organs testis
•
seminal
-
vessiae
sperm duct ( Vas deferens )
prostate
ducts epididymis
•
grand
-
,
Cowper 's
gland
urethra
and urethra
sperm
accessory glands prostate glands
•
epididymis
-
penis external genitalia penis
•
-
testis
foreskin
scrotum
scrotum
↳
contains the testis
Functions
① Acts the testis 2 to 3°C lower temperature The
as a
temperature regulator keeping ,
than body .
lower the formation of fertile sperm
temperature is
necessary for .
② Houses and protects the testis .
Testis
↳ outside the
two oval structures suspended body in scrotum
↳ in the
embryonic stage the testis are in the abdominal cavity ,
below
kidneys ,
before birth
they
descend into the scrotum
convoluted tubes (seminiferous tubules)
consist of
many compartments / lobules which contain
highly
•
,
germinal epithelium lines the tubules
•
•
interstitial cells are between tubules
Functions
Testis produce :
① sperm
by , the germinal layer
② testosterone , by the interstitial cells
, bladder
ffrd
-
-
seminal vesicle
f⑧⑧j=eFia78y
/ i
§ 1- prostate gland
Ducts Cowper 's gland
-
sperm duct
"
-
sidimtnimisrouseubues , into form
mis
-
testis
Functions
immature sperm enter where
they :
① mature , to become motile and fertile
② are stored for several months ( then broken down by the epithelial cells and re absorbed into the
-
body )
b) Sperm duct (Vas deferens )
↳ continuation of
epididymis
↳ leaves the scrotum
passes , through the prostate gland and enters the urethra
Functions
•
pushes mature sperm forward by strong peristaltic waves , from the epididymis into the urethra
(ejaculation )
c) Urethra
↳ duct at the end of the u ro genital system leading to the exterior
-
Function
•
forms a common duct for the transportation of urine and semen
Prostate gland
↳ surrounds the urethra and base of the bladder
plum sized
-
gland ,
Function
secretes fluid that aids the transportation of sperm and contains enzymes that make
•
a
sperm more active
fluid makes up 43 of seminal fluid (semen )
•
, Cowper 's gland
↳ two are found at the base of the penis
Function
produce alkaline mucous fluid when aroused , this fluid ( pre ejaculate )
like sexually
•
an -
: -
① neutralizes acidic urine that be present in the urethra
may
② lubricates the urethra and external urethral
opening to protect sperm from mechanical damage
during ejaculation
Denis
↳
consists of 3 sections of special spongy tissue (erectile tissue )
two are on the dorsal side (corpus cavernOsa ) and one
•
on
the ventral side Corpus Spong iOS Um )
↳ dilation blood blood
of dorsal and central arteries supply to the pen is ,
allowing more to fill
the three erectile chambers , causing the pen is to lengthen and stiffen (erection )
spongy
•
vital for sexual intercourse
↳ head
of the pen is is very sensitive and is protected by foreskin
Function
deposits female 's vagina during copulation ( increases chance of fertilisation )
•
semen with sperm into
What is distinctive about the human penis ?
↳ has no erectile bone Cbaculum) ; it relies on engorgement filling up ) with blood for erection
↳ is
hangs free ( other stored
'
not attached to the abdominal wall but mammals penises are
until erect )
internally
Semen (seminal fluid )
consists of :
sperm from the testis
•
seminal fluid from the sperm duct and
accessory glands (prostate )
•
male and female
Malereproductivesystem
Reproductive organs
Mpi
bladder
primary sex
organs testis
•
seminal
-
vessiae
sperm duct ( Vas deferens )
prostate
ducts epididymis
•
grand
-
,
Cowper 's
gland
urethra
and urethra
sperm
accessory glands prostate glands
•
epididymis
-
penis external genitalia penis
•
-
testis
foreskin
scrotum
scrotum
↳
contains the testis
Functions
① Acts the testis 2 to 3°C lower temperature The
as a
temperature regulator keeping ,
than body .
lower the formation of fertile sperm
temperature is
necessary for .
② Houses and protects the testis .
Testis
↳ outside the
two oval structures suspended body in scrotum
↳ in the
embryonic stage the testis are in the abdominal cavity ,
below
kidneys ,
before birth
they
descend into the scrotum
convoluted tubes (seminiferous tubules)
consist of
many compartments / lobules which contain
highly
•
,
germinal epithelium lines the tubules
•
•
interstitial cells are between tubules
Functions
Testis produce :
① sperm
by , the germinal layer
② testosterone , by the interstitial cells
, bladder
ffrd
-
-
seminal vesicle
f⑧⑧j=eFia78y
/ i
§ 1- prostate gland
Ducts Cowper 's gland
-
sperm duct
"
-
sidimtnimisrouseubues , into form
mis
-
testis
Functions
immature sperm enter where
they :
① mature , to become motile and fertile
② are stored for several months ( then broken down by the epithelial cells and re absorbed into the
-
body )
b) Sperm duct (Vas deferens )
↳ continuation of
epididymis
↳ leaves the scrotum
passes , through the prostate gland and enters the urethra
Functions
•
pushes mature sperm forward by strong peristaltic waves , from the epididymis into the urethra
(ejaculation )
c) Urethra
↳ duct at the end of the u ro genital system leading to the exterior
-
Function
•
forms a common duct for the transportation of urine and semen
Prostate gland
↳ surrounds the urethra and base of the bladder
plum sized
-
gland ,
Function
secretes fluid that aids the transportation of sperm and contains enzymes that make
•
a
sperm more active
fluid makes up 43 of seminal fluid (semen )
•
, Cowper 's gland
↳ two are found at the base of the penis
Function
produce alkaline mucous fluid when aroused , this fluid ( pre ejaculate )
like sexually
•
an -
: -
① neutralizes acidic urine that be present in the urethra
may
② lubricates the urethra and external urethral
opening to protect sperm from mechanical damage
during ejaculation
Denis
↳
consists of 3 sections of special spongy tissue (erectile tissue )
two are on the dorsal side (corpus cavernOsa ) and one
•
on
the ventral side Corpus Spong iOS Um )
↳ dilation blood blood
of dorsal and central arteries supply to the pen is ,
allowing more to fill
the three erectile chambers , causing the pen is to lengthen and stiffen (erection )
spongy
•
vital for sexual intercourse
↳ head
of the pen is is very sensitive and is protected by foreskin
Function
deposits female 's vagina during copulation ( increases chance of fertilisation )
•
semen with sperm into
What is distinctive about the human penis ?
↳ has no erectile bone Cbaculum) ; it relies on engorgement filling up ) with blood for erection
↳ is
hangs free ( other stored
'
not attached to the abdominal wall but mammals penises are
until erect )
internally
Semen (seminal fluid )
consists of :
sperm from the testis
•
seminal fluid from the sperm duct and
accessory glands (prostate )
•
