what is placenta? what is its function
Answers
placenta is a large organ that develops during pregnancy. It is attached to the wall of the uterus, usually at the top or side. The umbilical cord connects the placenta to baby.
Blood from the mother passes through the placenta, filtering oxygen, glucose and other nutrients to baby via the umbilical cord. The placenta also filters out substances that could be harmful to baby and removes carbon dioxide and waste products from baby’s blood.
The placenta produces a number of hormones that are needed during pregnancy, such as lactogen, oestrogen and progesterone. It keeps the mother’s blood separate from the baby’s blood to protect the baby against infections. Towards the end of the pregnancy, the placenta passes on antibodies to protect the baby after birth.
THIS WAS ABOUT THE HUMAN PLACENTA(MAMMAL)
If you were talking about plant..its a simple tissue which helps the ovules attach to the wall of ovary.