Placental

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Placenta

Placenta :- 

Placenta is a temporary intimate  mechanical and physiological connection between foetal and maternal tissues for the nutrition, respiration and excretion etc. 
The placenta is the passage that unites the fetus to the mother. The placenta facilitates the exchange of nutrients and oxygen to the fetus. It is also responsible for collecting carbon dioxide and waste materials from the fetus. In appearance, the placenta is disk-shaped and measures up to 22 cm in length. The placenta is also rich in blood vessels.

The placenta is exclusive to mammals. The umbilical cord connects the foetus to the placenta, facilitating the transfer of materials. The placenta is usually attached at the top, bottom, side, front or back of the uterus. In extreme cases, the placenta gets attached to the lower part of the uterus resulting in a condition known as placenta previa.







  • In human meta-distal placenta is present
  • The placenta  is fully formed in 10 weeks and last throughout the pregnancy
  • It is fetomaternal organ
  • It is the two components :-  1. Foetal part  2.Maternal part 

Functions of placenta:-

  • Transport  of oxygen
  • Transport of nutrients
  • Excretion of waste
  • Formation of barrier
  • Acts as an endocrine gland and secrets hormones   



      
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