BIOXII03: HUMAN REPRODUCTION
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Which one of the following is most likely root cause why menstruation is not taking place in regularly cycling human female?
1 Maintenance of the hypertrophical endometrial lining
2 Maintenance of high concentration of sex hormones in the blood stream
3 Retention of well-developed corpus luteum
4 Fertilization of the ovum
Explanation:
In a normal menstruating female, menstruation stops as ovum released by ovary is fertilized.