Question

Fluid filled antrum is present between secondary oocyte and _________

• A. membrane granulosa
• B. theca interna
• C. corona radiata
• D. cumulus oophorus

Hint:

The antrum lies between the oocyte with its surrounding cells and the outer granulosa layer.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept
In a tertiary follicle the secondary oocyte is surrounded by the zona pellucida and granulosa cells.
A fluid-filled cavity called the antrum forms inside the follicle.

Step 2: Key Point
The oocyte with its surrounding cells lies on one side, and the antrum separates it from the wall of the follicle.
That wall is lined by the membrana granulosa, outside which lie the theca interna and theca externa.

Step 3: Compare the options
So the antrum is present between the secondary oocyte and the membrana granulosa.

Final Answer:
The antrum lies between the secondary oocyte and the membrana granulosa. \[ \boxed{\text{(A) }\text{membrane granulosa}} \]