Question

What is the structure of tbe human placenta? Explain its function in humans?

Answer 1

 Type your question



Sandra Saju asked in Science

What is placenta? Also write its two functions ?

Share 

 4

 Follow0



Bubblyy Bhavzz answered this
504 helpful votes in Science, Class XI-Science

Placenta is the circular organ present in the uterus of pregnant mammals which is required for the nourishment and maintenance of the fetus. It performs various function like:

1) Nutrition : It helps to transport nutrients from mother's blood to foetus for its development.

2) Respiration: It provides oxygen to the fetus and take CO2away from the fetus.

3) Excretion: It helps in the removal of waste products from the fetus and transfers them to mother's blood.

4) Immunity: It provides immunity to the fetus. Antibodies developed in mother passes onto fetus through the placenta.

5) Storage: Placenta can stores some fats, glycogen and iron.

6) Secretion of hormones: It secretes many hormones like estrogen, progesterone, gonadotropin and placental lactogen, thus functions as an endocrine gland.

Answer 2

AhOy MaTeY !

Here's the answer>>>>>>>

Placenta :

• placenta is a tissue formed by the cells from the embryo and mother. It is formed at around 12 weeks of pregnancy and becomes an important structure for nourishment of the embryo. under normal conditions there is no direct flow of blood from mother to the baby. the blood systems of the two are separated by thin membranes made up of cells that allow an exchange mainly by diffusion, of oxygen, carbondioxide, nutrients, and waste materials

≅ the digested food from the mother travels through the mother's blood stream and exchange to the blood stream of the foetus through placenta

∞ in addition to ingested food the mother's body continuously breakes down muscles, fats and bones.

≡ releasing proteins, fats and calcium to the mother's blood that can be absorbed through the placenta to provide nutrients to the foetus

{ TLDR }

⇒ during the development of the embryo, tiny finger like projections grow from the surface of the outermembrane called chorion into the soft tissues of the uterus. gradually, small pools of rapidly moving blood around these finger like projections in the uterine wall....these tissues of the chorion and the adjacent part of the uterine tissues ,make up the placenta....

WISH IT HELPS :)

#M