Chemical-Coordination-And-Integration Question 45
Question: A decrease in the level of oestrogen and progesterone causes:
Options:
A) Growth and dilation of myometrium.
B) Growth of endometrium.
C) Constriction of uterine blood vessels leading to sloughing of endometrium or uterine epithelium.
D) Release of ovum from the ovary.
Show Answer
Answer:
Correct Answer: C
Solution:
Constriction of uterine blood vessels leading to sloughing of endometrium or uterine epithelium.
During the menstrual cycle, a decrease in the levels of estrogen and progesterone triggers the shedding of the endometrial lining of the uterus. This occurs because the decline in these hormones causes vasoconstriction of the uterine blood vessels, leading to reduced blood supply to the endometrium. This lack of blood flow results in the sloughing off of the endometrial tissue, which is expelled during menstruation.
BETA
