Question:hard
Which one of the following statements is NOT correct?
Which one of the following statements is NOT correct?
Show Hint
Atresia happens to follicles that never reach ovulation at all, separate from what the corpus luteum is doing.
Updated On: Jul 7, 2026
- The graafian follicle after ovulation changes to corpus luteum.
- Atretic follicles are formed after atrophy of corpus luteum.
- Estradiol is formed from androgens in the ovarian follicle.
- Follicular stimulating hormone (FSH) is necessary for the development of the granulosa layer.
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept.
Walk through the life story of one ovarian follicle across a cycle and check each statement against that story.
Step 2: Key Formula or Approach.
Only one follicle each cycle usually reaches ovulation and becomes the corpus luteum. All the other growing follicles that do not ovulate shrink away through a separate, ongoing process called atresia, and this can happen at any point in their growth, not tied to what the corpus luteum is doing.
Step 3: Detailed Explanation.
Saying the graafian follicle turns into the corpus luteum after ovulation is textbook correct, this is the normal fate of the ovulated follicle.
Saying FSH drives the growth of the granulosa cell layer is also textbook correct, this hormone works directly on those cells.
Saying estradiol comes from androgens inside the follicle matches the two cell model of the ovary, where one cell type supplies the androgen building block and another converts it into estrogen, so this statement holds up well too.
The statement that does not fit the real biology is the one connecting atretic follicles to the corpus luteum breaking down. Atresia is a fate for follicles that never ovulate at all, it happens throughout the cycle among the non selected follicles, and is a separate story from the corpus luteum's own decline into the corpus albicans.
Step 4: Final Answer.
"Atretic follicles are formed after atrophy of corpus luteum" is the statement that is NOT correct, since atresia is an independent, ongoing process unrelated to corpus luteum decline.
Walk through the life story of one ovarian follicle across a cycle and check each statement against that story.
Step 2: Key Formula or Approach.
Only one follicle each cycle usually reaches ovulation and becomes the corpus luteum. All the other growing follicles that do not ovulate shrink away through a separate, ongoing process called atresia, and this can happen at any point in their growth, not tied to what the corpus luteum is doing.
Step 3: Detailed Explanation.
Saying the graafian follicle turns into the corpus luteum after ovulation is textbook correct, this is the normal fate of the ovulated follicle.
Saying FSH drives the growth of the granulosa cell layer is also textbook correct, this hormone works directly on those cells.
Saying estradiol comes from androgens inside the follicle matches the two cell model of the ovary, where one cell type supplies the androgen building block and another converts it into estrogen, so this statement holds up well too.
The statement that does not fit the real biology is the one connecting atretic follicles to the corpus luteum breaking down. Atresia is a fate for follicles that never ovulate at all, it happens throughout the cycle among the non selected follicles, and is a separate story from the corpus luteum's own decline into the corpus albicans.
Step 4: Final Answer.
"Atretic follicles are formed after atrophy of corpus luteum" is the statement that is NOT correct, since atresia is an independent, ongoing process unrelated to corpus luteum decline.
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