If the corpus luteum degenerates prematurely, the most likely outcome is:
Correct answer: D. Implantation failure and end of pregnancy
- A. Enhanced ovulation and fertilization
- B. Increased LH secretin and extra egg release
- C. Increased estrogen secretion
- D. Implantation failure and end of pregnancy
Explanation
The corpus luteum produces the progesterone that maintains the uterine lining, so if it breaks down too early the lining is shed, implantation fails and an early pregnancy ends. Extra ovulation or more oestrogen would not follow, because the loss of hormone is the problem.
This question appeared on the UHS MDCAT 2026 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Menstrual Cycle
The menstrual cycle covers the coordinated changes in the ovaries and uterus, including menstruation, follicular growth, ovulation and corpus luteum formation. It links follicle-stimulating hormone, luteinizing hormone, oestrogen and progesterone with endometrial changes, and distinguishes the ovarian cycle from the uterine cycle and the hormonal events of pregnancy.
Practise Reproduction
1,225 free Reproduction MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.