Zona Pellucida: Definition & Concept


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The Zona Pellucida is shown at #3 in the image. What are some of the functions of the ZP at this developmental stage?

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1. When is the Zona Pellucida (ZP) formed?

2. What happens when the sperm 'docks' with the ZP?

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About This Quiz & Worksheet

The Zona Pellucida (ZP) plays an instrumental role in egg fertilization. This quiz and worksheet combination will check your understanding of the developmental stages and functions of the Zona Pellucida.

Quiz & Worksheet Goals

This quiz requires students to know the following information:

  • Functions and formation of the Zona Pellucida
  • Zona Pellucida's developmental stages
  • Reaction to the sperm's introduction into the ZP

Skills Practiced

Students utilizing this learning resource will gain practice with these skills:

  • Defining key concepts - ensure that you can accurately define main phrases, such as oocyte and glycoproteins
  • Distinguishing differences - compare and contrast the Zona Pellucida's three stages of growth
  • Knowledge application - use your knowledge to answer questions about development, formation and functions of the ZP

Additional Learning

The lesson titled Zona Pellucida: Definition & Concept provides an in-depth look into a region whose role is vital in reproduction. The objectives of this lesson are to:

  • Explain the process that prohibits more than one sperm from penetrating the oocyte
  • Present the ZP 's process as species specific, thus preventing cross-species fertilization
  • Discuss the role of the ZP in preventing ectopic pregnancy