The correct sequence of hormones secreted from the beginning of menstrual cycle is

The correct sequence of hormones secreted during the menstrual cycle is as follows:

• Follicle-Stimulating Hormone (FSH): FSH is released from the pituitary gland at the beginning of the menstrual cycle. It stimulates the growth and maturation of ovarian follicles in the ovaries.
• Oestrogen: As the ovarian follicles develop, they produce estrogen. Estrogen levels rise during the first half of the menstrual cycle and play a crucial role in thickening the uterine lining (endometrium) in preparation for a potential pregnancy. It also helps regulate the release of LH (luteinizing hormone).
• Luteinising hormone (LH): A high concentration of estrogens stimulates more frequent release of GnRH from the hypothalamus. It also directly stimulates gonadotrophs in the anterior pituitary to secrete LH. A surge in LH levels triggers ovulation, the release of a mature egg from the ovary, typically occurring around the middle of the menstrual cycle.
• Progesterone: After ovulation, the empty follicle transforms into a structure called the corpus luteum, which secretes progesterone. Progesterone helps prepare the uterine lining for potential implantation of a fertilized egg and maintains the uterine environment to support a pregnancy.

So, the correct sequence is FSH, estrogen, LH, and then progesterone.