Embryo Implantation and Placenta Formation


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question 1 of 3

Which of the following is an important function of the zona pellucida?

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1. When and how does the blastocyst use proteases?

2. Which of the following statements is true about the intervillous space?

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About This Quiz & Worksheet

This quiz and accompanying worksheet will help you assess your understanding of the chemical and physical steps that must occur for embryo implantation and placenta formation. You will be quizzed on the function of the zona pellucida, the role of proteases and trophoblasts, and other structures and processes that occur during early pregnancy.

Quiz & Worksheet Goals

This quiz will test your understanding of the various steps in implantation and placenta formation, including the definition and function of the following:

  • Zona pellucida
  • Blastocyst
  • Intervillous space
  • Trophoblasts
  • Chorionic villi

Skills Practiced

This assessment ensures the following skills development:

  • Making connections - use understanding of the concept embryonic circulation
  • Defining key concepts - ensure that you can accurately define main phrases, such as zona pellucid, protease, chorionic villi, trophoblasts and intervillous space
  • Information recall - access the knowledge you've gained regarding the ways the blastocyst uses proteases

Additional Learning

Review this lesson entitled Embryo Formation and Placenta Formation for more understanding of the processes involved in the early stages of pregnancy. This lesson covers:

  • The role of the uterus
  • What a protease is
  • What the placenta does