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Transcript
THE REPRODUCTIVE SYSTEM:
MALE & FEMALE ANATOMY
REPRODUCTIVE SYSTEM:
A system that produces
haploid sex cells called
gametes ( egg & sperm)
The male:
Male reproductive system
Ureter
Seminal Vesicle
bladder
Rectum
Prostate Gland
Vas Deferens
Penis
Epididymis
Urethra
Testes
Scrotum
TESTES: the male organs that
produce sperm cells and the
hormone Testosterone
Located
inside a sac
called the
scrotum
EPIDIDYMIS
TESTIS
SCROTUM
SCROTUM: located
outside the body
-protects the testes
- keeps them slightly
cooler than body
temperature
- important for sperm
cell development &
survival.
SEMINIFEROUS TUBULES:
Tightly coiled tubules that give the
testes their shape.
It is also
where
sperm is
produced.
Seminiferous
tubules
SPERM:
head
Middle
section
Tail
(flagellum)
Small, motile gametes
produced in the testes
and used for
reproduction - ~ 700
million produced each
day
EPIDIDYMIS:
A coiled tube that lies alongside
each testis inside the scrotum . It
is where sperm is stored until it is
matured.
VAS DEFERENS:
A duct that
transports sperm
from the epididymis
to the ejaculatory
duct & urethra. It is
the structure that is
cut during a
vasectomy.
EJACULATORY DUCT & URETHRA
Empties into the
urethra.
Passes through
the penis and
carries semen
and urine but
at different
times
PENIS: (surrounds the urethra)
Made of spongy erectile tissue that
expands when filled with blood.
Propels semen (containing sperm,
fructose & other fluids made by the
prostate gland) during ejaculation.
Semen also cleanses the urethra
PATHWAY OF SPERM OUT OF BODY
BLADDER
Ejaculatory duct
urethra
Vas deferens
penis
epididymis
testis
Reproductive system - female
The female reproductive
system:
Fallopian Tubes
Ovary
Uterus
Cervix
Vagina
Labia
The ovary:
The female organ that
usually releases one
ovum (egg) a month
Produces the hormones estrogen and
progesterone.
Contains about 400,000 follicles which is
where the egg develops and matures.
Fallopian tubes:
Pathway through which an egg travels to
the uterus.
Fertilization occurs here.
Structure that
is cut/tied
during a tubal
ligation.
Uterus:
Muscular,
pear-shaped
organ where
the fetus
develops.
Cervix
connects
the uterus to
the vagina
Inner layer called the endometrium where
fertilized egg plants itself.
Vagina:
* Tube shaped organ that opens to the
outside of the body
* Receives the penis
during intercourse - it is
also where sperm enters.
* Serves as the birth canal
where the baby exits the
body.
Pathway of sperm during
intercourse:
Fallopian
tubes
uterus
cervix
vagina
Pathway of egg :
Fallopian
tubes
Uterus
If fertilized, implants in uterine wall.
If not, discharged with uterine wall
during menstruation.