Question

Placenta in human is _______.

• A. Yolk sac type
• B. Primitive type
• C. Hemochorial type
• D. Syndesmochorial type

Answer 1

The correct option is C Hemochorial type

• Placenta is a structure that forms a connection between mother and foetus. There are five types of placenta based on histology. They are epitheliochorionic placenta, syndesmochorionic placenta, endotheliochorionic placenta, haemochorionic placenta, and haemoendothelio placenta. The haemochorionic placenta is found in human in which three barriers are present. Haemochorionic placenta is a structure in which the maternal blood is in direct contact with the chorion layer.
• Syndesmochorial type is found in cattles like cow, buffaloes, etc in which five barriers are present.
• Epitheliochorionic placenta is primitive placenta found in horse, ass, pig, etc in which six barriers are present.
  
• Yolk sac is a layer which forms placenta found in marsupials.

So, the correct answer is option C.