BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The menstrual cycle is regulated by hormones. Luteinizing hormone and follicle-stimulating hormone, which are produced by the pituitary gland, promote ovulation and stimulate the ovaries to produce estrogen and progesterone.

Detailed explanation-2: -Hormones secreted by the hypothalamus, the pituitary and the ovary are the messengers that regulate the monthly cycle.

Detailed explanation-3: -In women, FSH helps control the menstrual cycle and stimulates the growth of eggs in the ovaries. FSH levels in women change throughout the menstrual cycle, with the highest levels happening just before an egg is released by the ovary. This is known as ovulation.

Detailed explanation-4: -LH plays an important role in sexual development and functioning. In women, LH helps control the menstrual cycle. It also triggers the release of an egg from the ovary. This is known as ovulation.

Detailed explanation-5: -Progesterone and estrogen cause the lining of the uterus to thicken more, to prepare for possible fertilization.