Download Functions of the Placenta

Reproduction and
Development
Review
bladder
Vas deferens
Seminal
vesicles
testes
Prostate gland
Cowpers glands
urethra
penis
Seminal
3 vesicle
Vas
4 deferens
2prostate
penis
5
6urethra
1
epididymis
testis
7
What is the function of
Penis………………..
Epididymis………..
Seminal vesicles..
Prostate gland…..
Cowpers gland....
Internal fertilization
Stores mature sperm
Sugar solution – for sperm
Basic solution - protection
Lubricant – for ejaculation,
urethra
1 oviduct1
2 uterus 1
6 ovary
1
3 cervix1
4 vagina 1
5 Lining of
1 uterus
(endometrium)
7 oviduct
8 ovary
11 uterus
9 cervix
10 vagina
placenta
-A temporary organ (gland) forming
from the chorion and the endometrium
from mother
What are the functions of the
placenta?
Functions of the Placenta
1.
2.
3.
4.
source of nourishment for embryo
respiratory surface for embryo
excretory organ of embryo
attaches embryo/fetus to wall of
uterus
5. secretes chorionic gonadotropin,
progesterone, estrogen regulation of pregnancy
The blood of the
embryo/fetus and the
mother do not mix!
(embryonic and maternal circulatory
systems are not connected )
How do substances get for the
mom’s blood to the fetus and
vice versa?
amnion
thin, tough, membranous sac that
encloses the embryo or fetus of a
mammal, bird, or reptile. It is filled
with amniotic fluid in which the
embryo is suspended
What is the function of amniotic fluid?
6 weeks
- Keeps baby warm
- Lubrication keeps
body parts from
growing together
- Allows movement of baby (exercise)
- Shock absorber