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प्रश्न
Briefly describe the secretory phase of the menstrual cycle.
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उत्तर
Secretory phase begins after ovulation. Corpus luteum the remnants of graafian follicle under influence of LH secretes hormones namely progestrone and estrogen. Both LH and progestrone help in further growth and thickening of endometrium and its gland become secretory endometriums fully ready for the attachment and nourishment of blastocyst. In case high presence of progestrone reduce the level of LH and FSH which result in reduced synthesis of progestrone. Endometrium breakdown and moves out in the form of mucus and blood. Corpus luteum degenerate into white body called corpus albicans.
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संबंधित प्रश्न
Why is follicular phase in the menstrual cycle also referred as proliferative phase? Explain.
The human female gonads are ovaries. A maturing egg in the ovary is present in a sac of cells called ______ (1). As the egg grows larger, the follicle enlarges and gets filled with a fluid and is now called the ______ (2) follicle. The process of releasing the egg from the ovary is called ______ (3). The ovum is picked up by the oviducal funnel and fertilization takes place in the ______ (4). In about a weak the blastocyst gets fixed in the endometrium of the uterus and this process is called ______ (5).
How can the scientific understanding of the menstrual cycle of human females help as a contraceptive measure?
Give appropriate biological or technical terms for the following:
The onset of menstruation in a young girl
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Menarche is the stoppage of menstruation.
The luteal phase of the menstrual cycle is also called the secretory phase. Give reason.
Progesterone peaks during which phase of the menstrual cycle?
Menstruation normally occurs once in ______.
The growth of corpus luteum is initiated by:
Observe the figure and label it properly.
- Name the hormone that regulates the cycle.
- Name the phases in this cycle.
- What is the duration of ovulation phase?
- What happens if implantation occurs?
- What happens if implantation does not occur?
