Question

what do you mean by placenta ? describe its function.​

Answer 1

placenta

The placenta is an organ that develops in mother uterus during pregnancy. This structure provides oxygen and nutrients to your growing baby and removes waste products from your baby's blood. The placenta attaches to the wall of your uterus, and your baby's umbilical cord

arises from it.

Function.

1. gas exchange and the transfer of nutrients and waste products between maternal and fetal plasma;
2. gas exchange and the transfer of nutrients and waste products between maternal and fetal plasma;transfer of immunity by transfer of immunoglobulins from the mother to the fetus;
3. gas exchange and the transfer of nutrients and waste products between maternal and fetal plasma;transfer of immunity by transfer of immunoglobulins from the mother to the fetus;secretion of hormones which are important for fetal growth and development.

Answer 2

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Placenta is faeto- maternal specialised convective tissue that develops during pregnancy and forms temporary association between foetal and maternal tissues. Foetal part is made up of chorion while maternal part of decidua basalis, (I.e. modified uterine Endometrium). It provides rapid exchange of materials foetus and maternal blood.

It is also secretes relaxin hormone at the time of parturition which dilates cervix and public symphysis to fascilate birth of child.

Some important functions of placenta are :-

• It is attached to the fetus to uterine wall

• Metabolic transfer

• It secret the harmones and provide nutrients to the fetus.