NEET BIOLOGY

Detailed explanation-1: -Leutinizing hormone (LH), the other reproductive pituitary hormone, aids in egg maturation and provides the hormonal trigger to cause ovulation and the release of eggs from the ovary.

Detailed explanation-2: -As we mentioned, a luteinizing hormone surge occurs during the follicular phase, just before ovulation is going to occur. During this phase, estrogen is dominant and stimulates the pituitary gland to release LH. On average, an LH surge occurs about 24 hours before ovulation, although this can vary.

Detailed explanation-3: -The hypothalamus secretes GnRH in a pulsatile fashion, which triggers FSH and LH release from the anterior pituitary. These, in turn, act on the granulosa and theca cells in the ovary to stimulate follicle maturation and trigger ovulation.

Detailed explanation-4: -LH in synergy with follicle stimulating hormone (FSH) stimulates follicular growth and ovulation. Thus, normal follicular growth is the result of complementary action of FSH and LH.

Detailed explanation-5: -Ovulation is spontaneously triggered about 36-40 hours after blood levels of a hormone called luteinizing hormone (LH) rise. This is called the LH surge. Once released from the ovary, the egg is picked up by and travels down the fallopian tube where it can meet sperm to become fertilized.