Human Reproduction
, materereten ③ Maver
volfere n e :
duch
e o ft a t e gea n d Muscular Sperm duct -
continuation of epididymis
·
·
plunsized gland -
surrounds Grethra at base of bladder ·
leaves scrotum -
passes prostate
-
enters Urethra
my
increase wl exerts pressure on urethra functions
size
age= I
·
may
↳
slows emptying of bladder : pushes mature sperm forward -
via peristaltic waves
functions ↳
ejaculation
.. Secretes fluid wi activators- aids sperm
transport ↳ pushed into urethra
"in
= ...
↳ of seminal fluid
i
=
I
· inster
*
·
primary sex
organ
zoval structures suspended outside body in scroturn
· -
↳
embryonic stage in abdominal
=
cavity
·
contain lobules =
contain seminiferous tubules
↳
* line wI
germinal epithelium
epiolindlym i s :
duct ↳
between =
interstitial cells
functions
coiled mass: seminiferous tubules joined I
·
immature sperm enter
·
foreskin produce sperm
& Seedeais e
·
1 .
↳
functions protects head of penis produce testosterone
I .
2
fertile ↳
1. mature Sperm motile very sensitive
=
+
.
2 stores sperm =
for several months
↳
may be removed via circumcision
↳ if not · seminal vesicles
ejaculated
=
reabsorbed gland
·
bone functions
pubic I
. provides seminal fluid for sperm to swim in
- "
195
t re
S
e a
⑮
dUCt provides fructose for sperm cell
.
2
energy
:
-
duct at end of uro-genital duct
·
↳
Common duct
↳ open glaid
functions
I
. transportation of sement Urine
·
I at base of penis
↳ (never simultaneously) functions
I
. produces alkaline mucous-like fluid
↳
al neutralizes any remaining acidic Urine
Heming d
external organ
: ↳ b) lubricates urethra= protect sperm from
·
consists of 3 sections of erectile tissue mechanical damage
↳ I
=
dorsal side =
corpus cavernosa
↳
I ventral side=corpus spongios um
=
↳ B a tum
filled wi blood from dorsal ,
central arteries
-penis lengthens t stiffens =
erection
·
contains testis hangs outside body
↑
↳ section functions
necessary for effective sperm transfer cross
i
⑱00 arraaitare
functions
I regulator 341350
->
1 .
temp
e
⑧
↓ deposits semen wI sperm into vagina ↳
prevent protein denaturing
cavernous
artery
corpus cavernos a
↳ Sperm closer to
egg greater fertilisation chances house protect testes
=
2 .
+
Grethra
nee
, te ste r
cross of seminiferous tubule
cross section
through testes
·
interstitial cells
18bUle
lumen
&
only know purple labels
& must be able to draw
germinal epithelium produces sperm cells
·
interstitial/Leidig cells produce testosterone
-
·
·
cell of sertoli -
nutritional supply for sperm cells
see
·
consists of :
1 .
Semen- from testis
2. Seminal fluid -
from was deferens
accessory glands
me
average volume per ejaculation 2 5-5
· =
.
↳ave no .
Of sperm -
50-150 million per me
=
700 mil .
per ejaculation
↳ 20 Mil .
=
infertile
spee mat o genesis
·
sequence of events during which diploid cells in seminiferous tubules undergo meiosis =
produces mature
,
haploid sperm
↳
specifically germinal epithelium
:
·
essential hormone= testoster one
begins at puberty
·
seem sell
adaptations for fertilisation
gene
·
Head acrosome contains hydrolytic enzymes -
digests outer membrane of egg allows sperm to penetrate
= =
·
nucleus contains haploid chromosomes
· nm
I
·
viable in Fallopian tubes for 48 hours
↳
obtains nutrients from seminal fluid +
female secretions
, materereten ③ Maver
volfere n e :
duch
e o ft a t e gea n d Muscular Sperm duct -
continuation of epididymis
·
·
plunsized gland -
surrounds Grethra at base of bladder ·
leaves scrotum -
passes prostate
-
enters Urethra
my
increase wl exerts pressure on urethra functions
size
age= I
·
may
↳
slows emptying of bladder : pushes mature sperm forward -
via peristaltic waves
functions ↳
ejaculation
.. Secretes fluid wi activators- aids sperm
transport ↳ pushed into urethra
"in
= ...
↳ of seminal fluid
i
=
I
· inster
*
·
primary sex
organ
zoval structures suspended outside body in scroturn
· -
↳
embryonic stage in abdominal
=
cavity
·
contain lobules =
contain seminiferous tubules
↳
* line wI
germinal epithelium
epiolindlym i s :
duct ↳
between =
interstitial cells
functions
coiled mass: seminiferous tubules joined I
·
immature sperm enter
·
foreskin produce sperm
& Seedeais e
·
1 .
↳
functions protects head of penis produce testosterone
I .
2
fertile ↳
1. mature Sperm motile very sensitive
=
+
.
2 stores sperm =
for several months
↳
may be removed via circumcision
↳ if not · seminal vesicles
ejaculated
=
reabsorbed gland
·
bone functions
pubic I
. provides seminal fluid for sperm to swim in
- "
195
t re
S
e a
⑮
dUCt provides fructose for sperm cell
.
2
energy
:
-
duct at end of uro-genital duct
·
↳
Common duct
↳ open glaid
functions
I
. transportation of sement Urine
·
I at base of penis
↳ (never simultaneously) functions
I
. produces alkaline mucous-like fluid
↳
al neutralizes any remaining acidic Urine
Heming d
external organ
: ↳ b) lubricates urethra= protect sperm from
·
consists of 3 sections of erectile tissue mechanical damage
↳ I
=
dorsal side =
corpus cavernosa
↳
I ventral side=corpus spongios um
=
↳ B a tum
filled wi blood from dorsal ,
central arteries
-penis lengthens t stiffens =
erection
·
contains testis hangs outside body
↑
↳ section functions
necessary for effective sperm transfer cross
i
⑱00 arraaitare
functions
I regulator 341350
->
1 .
temp
e
⑧
↓ deposits semen wI sperm into vagina ↳
prevent protein denaturing
cavernous
artery
corpus cavernos a
↳ Sperm closer to
egg greater fertilisation chances house protect testes
=
2 .
+
Grethra
nee
, te ste r
cross of seminiferous tubule
cross section
through testes
·
interstitial cells
18bUle
lumen
&
only know purple labels
& must be able to draw
germinal epithelium produces sperm cells
·
interstitial/Leidig cells produce testosterone
-
·
·
cell of sertoli -
nutritional supply for sperm cells
see
·
consists of :
1 .
Semen- from testis
2. Seminal fluid -
from was deferens
accessory glands
me
average volume per ejaculation 2 5-5
· =
.
↳ave no .
Of sperm -
50-150 million per me
=
700 mil .
per ejaculation
↳ 20 Mil .
=
infertile
spee mat o genesis
·
sequence of events during which diploid cells in seminiferous tubules undergo meiosis =
produces mature
,
haploid sperm
↳
specifically germinal epithelium
:
·
essential hormone= testoster one
begins at puberty
·
seem sell
adaptations for fertilisation
gene
·
Head acrosome contains hydrolytic enzymes -
digests outer membrane of egg allows sperm to penetrate
= =
·
nucleus contains haploid chromosomes
· nm
I
·
viable in Fallopian tubes for 48 hours
↳
obtains nutrients from seminal fluid +
female secretions
