Question
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
High concentration of Progesterone
Low concentration of LH
Low concentration of FSH
High concentration of estrogen
According to the text, during the follicular phase, the secretion of gonadotropins (LH and FSH) increases, which stimulates the secretion of estrogens by the growing follicles. The text states that 'Both LH and FSH attain a peak level in the middle of cycle', resulting in the LH surge which 'induces rupture of Graafian follicle and thereby the release of ovum (ovulation)'. Biologically, the high concentration of estrogen produced by the mature follicle exerts positive feedback, triggering this LH surge. Among the given options, high estrogen is the correct condition preceding ovulation, whereas progesterone peaks later in the luteal phase.
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
Which one of the following is the most likely root cause of why menstruation is not taking place in a regularly cycling human female?
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:
Match Column-I with Column-II and select the correct option using the codes given below:
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