Question

Menstruation results in the discharge of:
A) The corpus luteum of the uterus.
B) Surface cells from the vagina.
C) Blood from the outer surface of the uterus.
D) The endometrial lining.

Answer 1

Hint: Endometrium is expelled from the uterus during menstrual cycles through the cervix and vagina. Menstruation is the process by which the endometrium, or thicker uterine lining, is expelled from the body via the vagina. Menstrual fluid contains mucus, blood, and endometrial cells from the uterine lining.


Complete Step by Step Answer:
The lining of the uterus is called endometrium. It is one of the few organs in the human body that changes in size on a monthly basis during a person's reproductive years. Each month, as part of the menstrual cycle, the body prepares the endometrium to contain an embryo.
The endometrium is the term for the uterus' lining.The uterine lining, also known as the endometrial lining, increases each month when the ovaries release an egg in preparation for an embryo. The lining sheds and leaves the body through the vaginal canal if the egg is not fertilised.
At any point in the menstrual cycle, an endometrial thickness of less than 14 mm is commonly regarded as normal. Premenopausal women's endometrial thickness varies between two and four millimetres during menstruation.
Hence, option D is the correct answer.

Note:The endometrium is a lining that is made up of cells and supplied by numerous blood vessels. During the first two weeks of your cycle, oestrogen causes this lining to start to thicken up. The egg you release after ovulation may or may not be fertilised.