Asked by Juliana Yates on May 07, 2024
Verified
Menstrual flow begins in response to ____.
A) rising levels of FSH and LH
B) falling levels of estrogen only
C) falling levels of progesterone only
D) falling levels of estrogen and progesterone
E) rising levels of LH and falling levels of FSH
Menstrual Flow
The shedding of the uterine lining (endometrium) that occurs in the absence of pregnancy, resulting in bleeding through the vagina.
Estrogen
A group of steroid hormones that play an essential role in regulating female reproductive physiology, including the menstrual cycle and reproductive system development.
Progesterone
A hormone produced by the corpus luteum, known as a steroid, that encourages the uterus to get ready for pregnancy.
- Comprehend the regulation of hormones and feedback processes in human reproductive systems.
Verified Answer
ZK
Zybrea KnightMay 07, 2024
Final Answer :
D
Explanation :
Menstrual flow begins in response to falling levels of estrogen and progesterone, which triggers the shedding of the endometrium. FSH and LH levels also play a role in the menstrual cycle, but they are not the direct trigger for the onset of menstrual flow.
Learning Objectives
- Comprehend the regulation of hormones and feedback processes in human reproductive systems.