Which hormone stimulates ovulation?

Which hormone stimulates ovulation?

• A. Luteinizing hormone
• B. Follicle-stimulating hormone
• C. Estrogen
• D. Progesterone

Answer: (A)

The release of an egg at mid-cycle is triggered by a surge of luteinizing hormone. This LH rise occurs as estrogen from the maturing follicle climbs and provides positive feedback at the pituitary, prompting a sharp LH spike that causes the dominant follicle to rupture and release the oocyte. After ovulation, the corpus luteum forms and secretes progesterone to prepare the uterine lining for possible implantation. FSH mainly supports follicle growth, but it is not the direct trigger for ovulation, while progesterone is produced after ovulation and helps maintain the endometrium.

The release of an egg at mid-cycle is triggered by a surge of luteinizing hormone. This LH rise occurs as estrogen from the maturing follicle climbs and provides positive feedback at the pituitary, prompting a sharp LH spike that causes the dominant follicle to rupture and release the oocyte. After ovulation, the corpus luteum forms and secretes progesterone to prepare the uterine lining for possible implantation. FSH mainly supports follicle growth, but it is not the direct trigger for ovulation, while progesterone is produced after ovulation and helps maintain the endometrium.