What is placenta? Mention its role during pregnancy?

Question

What is the placenta? Mention its role during pregnancy?

Answer 1

• Placenta is a disc which is embedded in the uterine wall. 
• It contains villi on the embryo’s side of the tissue. 
• On the mother’s side are blood spaces, which surround the villi. 
• This provides a large surface area for glucose and oxygen to pass from the mother to the embryo. 
• The embryo gets nutrition from the mother’s blood with the help of placenta. 
• The developing embryo will also generate waste substances which can be removed by transferring them into the mother’s blood through the placenta