Question
Which one of the following is the most likely root cause of why menstruation is not taking place in a regularly cycling human female?
Fertilisation of the ovum
Maintenance of the hypertrophical endometrial lining
Maintenance of high concentration of sex-hormones in the blood stream
Retention of well-developed corpus luteum
According to the sources, menstruation occurs only if the released ovum is not fertilised . In the absence of fertilisation, the corpus luteum degenerates, causing the disintegration of the endometrium and the start of a new menstrual cycle . If fertilisation occurs, it triggers the start of pregnancy, during which all events of the menstrual cycle stop and no menstruation takes place . While the retention of the corpus luteum and the maintenance of the endometrial lining are the immediate physiological states that prevent bleeding, they are both downstream consequences of the root cause, which is the fertilisation of the ovum .
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Human Reproduction. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
More Human Reproduction Questions
The figure given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of A-F have been correctly identified?
Seminal plasma in humans is rich in:
Identify the human development stage and its correct site of occurrence in a normal pregnant woman:
Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of:
Capacitation occurs in:
Menstrual flow occurs due to the lack of:
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
Match Column-I with Column-II and select the correct option using the codes given below:
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