Which one of the following is the correct matching of the events occur...
The corpus luteum is essential for establishing and maintaining pregnancy in females. In the ovary, the corpus luteum secretes estrogens and progesterone, which are steroid hormones responsible for the thickening of the endometrium and its development and maintenance, respectively.
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Which one of the following is the correct matching of the events occur...
Proliferative phase:
- This phase is characterized by the rapid regeneration of the endometrium (myometrium) in preparation for a potential pregnancy.
- It also involves the maturation of the Graffian follicle in the ovary, which contains the oocyte.
Development of corpus luteum:
- The corpus luteum is formed from the remnants of the Graffian follicle after ovulation.
- During the secretory phase of the menstrual cycle, the corpus luteum secretes progesterone, which helps in preparing the endometrium for implantation of a fertilized egg.
Menstruation:
- Menstruation occurs when the endometrium sheds if the ovum is not fertilized.
- This shedding results in the bleeding that is characteristic of menstruation.
Ovulation:
- Ovulation is the release of a mature egg from the ovary.
- It is triggered by a surge in luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which leads to the rupture of the Graffian follicle and the release of the egg.
- Following ovulation, there is a sharp fall in the secretion of progesterone if fertilization does not occur.
Therefore, the correct matching of events occurring during the menstrual cycle is development of the corpus luteum with the secretory phase and increased secretion of progesterone.
Which one of the following is the correct matching of the events occur...
B option is correct refer ncert