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The outside layer of the oocyte is the ...

The outside layer of the oocyte is the ________ .

A

theca interna

B

theca externa

C

zona pellucida

D

antrum

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Structure of the Oocyte**: The oocyte is a female gamete, and it has several layers surrounding it. To answer the question, we need to identify the outermost layer. 2. **Identifying the Layers**: The layers surrounding the oocyte include: - The vitelline membrane (which is a jelly-like substance and not a true membrane). - The zona pellucida (a glycoprotein layer that surrounds the oocyte). - The corona radiata (a layer of follicular cells that provide protection). 3. **Determining the Outermost Layer**: Among these layers, the zona pellucida is the first true membrane that surrounds the oocyte. It is crucial for the fertilization process as it must be penetrated by sperm for fertilization to occur. 4. **Conclusion**: Therefore, the outside layer of the oocyte is the **zona pellucida**. ---
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