:÷É¥jÉÉ÷ÉÉj!É:÷
.
AND-68
bladder (1) The Testes
each in double
•
scrotum : -
layered
seminal vesicle
pouch .
Vas deferens
lsperm duct) •
Spermatozoa : cells that carry
a man 's
genetic material
§
.
prostate gland
tubules are known as =
Cowper 's gland urethra
seminiferous tubules
µ
epididymis spongy tissue
•
Interstitial cells : responsible
for production / secretion of
scrotum
testosterone .
foreskin
glans penis
within the scrotum
(2) seminiferous tubules :
open into the epididymis .
'
Vas deferens (sperm duct) :
runs from epididymis into pelvic cavity .
(3) The scrotum :
pouch like structure containing testes .
•
lower than body temp favours sperm production
.
:
-
34°C
(4) The spermatic cord : cord like structure formed
-
by Vas deferens
-
Vas deferens , blood vessels and nerves of testes are wrapped in covering muscle
during journey of sperm from testes to urethra , accessory glands add secretions to
-
sperm .
(5) The seminal vesicles :
glands that produce the fluids that will turn into semen .
'
secrete a thick , clear fluid which stimulates movement of spermatozoa
•
secretion contains fructose which supplies nutrients for energy to sperm .
( needs mitochondria)
⑥ The prostate gland : located just below the bladder } in front of rectum
-
fluid provides the correct pH for sperm .
Neutralising the acidity of traces of urine
(7) Cowper's glands : secrete a mucous substance that protects the sperm by cleaning urethra
prior to ejaculation } provides lubrication
(8) The penis : consists of connective tissue with numerous small blood sinuses ( spaces fill with blood)
, """""" """
aÉy
d)?:÷ !"÷i ÷ ¥÷
"""""
"""" " "°" "
' blood vessels and nerves
connects testis to
# Vas deferens
epididymis
-
head of
Vas deferens
§g
" "" " " seminiferous tubules
,
:
:¥ outer layer of testis
body of epididymis
STRUCTURE OF SPERM CELLS
head : aero some =
membrane bound sac
containing enzymes
haploid nucleus
middle : coiled mitochondria n =
responsible for providing ATP for movement of tail
tail :
microtubules which contract to propel the sperm cell forwards .
BODEN 880 oi-GYABDOBD-GAfr.DE88-8
'
gametes from male + female are produced in
gonads
(1) Spermatogenesis : cell differentiation process that ensures the production of fertilizing sperm .
'
germinal Epithelium : lines walls of seminiferous tubule contains cells which divide by mitosis
then meiosis 1 then meiosis 11
'
this process produces haploid spermatids .
they mature ,
form tails and are known as
spermatozoa /sperm .
Cells of Sertoli :
provide nutrients for developing spermatozoa
'
.
AND-68
bladder (1) The Testes
each in double
•
scrotum : -
layered
seminal vesicle
pouch .
Vas deferens
lsperm duct) •
Spermatozoa : cells that carry
a man 's
genetic material
§
.
prostate gland
tubules are known as =
Cowper 's gland urethra
seminiferous tubules
µ
epididymis spongy tissue
•
Interstitial cells : responsible
for production / secretion of
scrotum
testosterone .
foreskin
glans penis
within the scrotum
(2) seminiferous tubules :
open into the epididymis .
'
Vas deferens (sperm duct) :
runs from epididymis into pelvic cavity .
(3) The scrotum :
pouch like structure containing testes .
•
lower than body temp favours sperm production
.
:
-
34°C
(4) The spermatic cord : cord like structure formed
-
by Vas deferens
-
Vas deferens , blood vessels and nerves of testes are wrapped in covering muscle
during journey of sperm from testes to urethra , accessory glands add secretions to
-
sperm .
(5) The seminal vesicles :
glands that produce the fluids that will turn into semen .
'
secrete a thick , clear fluid which stimulates movement of spermatozoa
•
secretion contains fructose which supplies nutrients for energy to sperm .
( needs mitochondria)
⑥ The prostate gland : located just below the bladder } in front of rectum
-
fluid provides the correct pH for sperm .
Neutralising the acidity of traces of urine
(7) Cowper's glands : secrete a mucous substance that protects the sperm by cleaning urethra
prior to ejaculation } provides lubrication
(8) The penis : consists of connective tissue with numerous small blood sinuses ( spaces fill with blood)
, """""" """
aÉy
d)?:÷ !"÷i ÷ ¥÷
"""""
"""" " "°" "
' blood vessels and nerves
connects testis to
# Vas deferens
epididymis
-
head of
Vas deferens
§g
" "" " " seminiferous tubules
,
:
:¥ outer layer of testis
body of epididymis
STRUCTURE OF SPERM CELLS
head : aero some =
membrane bound sac
containing enzymes
haploid nucleus
middle : coiled mitochondria n =
responsible for providing ATP for movement of tail
tail :
microtubules which contract to propel the sperm cell forwards .
BODEN 880 oi-GYABDOBD-GAfr.DE88-8
'
gametes from male + female are produced in
gonads
(1) Spermatogenesis : cell differentiation process that ensures the production of fertilizing sperm .
'
germinal Epithelium : lines walls of seminiferous tubule contains cells which divide by mitosis
then meiosis 1 then meiosis 11
'
this process produces haploid spermatids .
they mature ,
form tails and are known as
spermatozoa /sperm .
Cells of Sertoli :
provide nutrients for developing spermatozoa
'
