Correct sequence of hormone secretion from beginning of menstruation isa)FSH, progesterone, estrogenb)Estrogen, FSH, progesteronec)FSH, estrogen, progesteroned)Estrogen, Progesterone, FSHCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Before the start of the Menstrual cycle, The estrogen and progesterone levels are low. Low levels of estrogen and progesterone signal the pituitary gland to produce Follicle Stimulating Hormone (FSH). FSH begins the process of maturing. The follicle produces more estrogen. Increased estrogen levels trigger a sharp rise in Luteinizing Hormone (LH) from the pituitary gland, causing release of the egg from the follicle. The ruptured follicle called the corpus luteum now secretes more progesterone and estrogen to continue to prepare the uterus for pregnancy. If the egg is not fertilized, estrogen and progesterone levels drop and the menses begin

So, the correct sequence is 'FSH, Estrogen, Progesterone'

Answer

First FSH produced and than estrogen from follicle and than corpus luteum produce progesterone.

Answer

Hormone Secretion during Menstruation

During the menstrual cycle, various hormones are secreted by the hypothalamus, pituitary gland, and ovaries. These hormones play a crucial role in regulating the menstrual cycle and preparing the body for possible pregnancy. The correct sequence of hormone secretion from the beginning of menstruation is FSH (follicle-stimulating hormone), estrogen, and progesterone.

1. FSH (Follicle-Stimulating Hormone):
- FSH is secreted by the pituitary gland (specifically the anterior pituitary).
- At the beginning of menstruation, FSH levels rise, stimulating the growth and development of ovarian follicles.
- These follicles contain immature eggs (oocytes), and FSH helps in their maturation.

2. Estrogen:
- As the ovarian follicles grow and mature, they produce estrogen.
- Estrogen is responsible for the thickening of the uterine lining (endometrium) in preparation for possible implantation of a fertilized egg.
- High levels of estrogen stimulate the release of luteinizing hormone (LH).

3. Progesterone:
- LH surge triggers ovulation, the release of a mature egg from the ovary.
- After ovulation, the ruptured follicle transforms into the corpus luteum, which secretes progesterone.
- Progesterone prepares the uterus for potential implantation by further thickening the endometrium and promoting the secretion of nutrients.
- If fertilization and implantation do not occur, the corpus luteum degenerates, leading to a decrease in progesterone levels.

4. Menstruation:
- In the absence of fertilization and implantation, declining levels of estrogen and progesterone result in the shedding of the thickened uterine lining.
- This shedding, known as menstruation, is characterized by the discharge of blood and tissue from the uterus through the vagina.
- The decrease in hormone levels also signals the pituitary gland to start the next menstrual cycle by secreting FSH again.

In summary, the correct sequence of hormone secretion from the beginning of menstruation is FSH, estrogen, and progesterone. FSH stimulates the growth of ovarian follicles, which then produce estrogen. Estrogen thickens the uterine lining and triggers the release of LH, leading to ovulation. After ovulation, the corpus luteum secretes progesterone, which prepares the uterus for possible implantation. If fertilization does not occur, hormone levels decrease, resulting in menstruation.

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