Which of the following hormones plays a role in the thickening of the lining of the uterus?

Correct option is B

Sol. Estrogen is responsible for thickening the endometrial lining of the uterus during the menstrual cycle. It is primarily produced by the ovaries and plays a key role in regulating reproductive health, preparing the uterus for potential pregnancy. Estrogen also maintains bone density, cardiovascular health, and secondary sexual characteristics in females.
Explanation of Each Option:
· Adrenaline: Incorrect; a stress hormone involved in the fight-or-flight response, not uterine function.
· Estrogen: Correct answer; promotes endometrial growth and prepares the uterus for implantation.
· Thyroxine: Incorrect; a thyroid hormone that regulates metabolism, not reproductive health.
· Melatonin: Incorrect; regulates sleep-wake cycles but does not influence uterine changes.