Menstruation results in the discharge of __________.

• A. the follicle
• B. the corpus luteum
• C. surface cells from the vagina
• D. blood from the outer surface of the uterus
• E. the endometrium

Answer: (E)

Verified step by step guidance

1. Understand the menstrual cycle: The menstrual cycle is a monthly process that prepares the female body for pregnancy. It involves the thickening of the endometrium (the lining of the uterus) to support a potential pregnancy.
2. Identify the role of the endometrium: The endometrium is the inner lining of the uterus that thickens during the menstrual cycle in preparation for a fertilized egg to implant.
3. Recognize what happens if pregnancy does not occur: If the egg is not fertilized, the thickened endometrium is not needed and will be shed from the body.
4. Define menstruation: Menstruation is the process by which the endometrium is shed from the uterus and exits the body through the vagina, resulting in menstrual bleeding.
5. Conclude the correct answer: Therefore, menstruation results in the discharge of the endometrium, not the follicle, corpus luteum, surface cells from the vagina, or blood from the outer surface of the uterus.