Question

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what happens if fertilization does not occur?
the corpus luteum will continue to produce progesterone at the same level
the egg will remain in the fallopian tube
the menstrual cycle will stop
the corpus luteum will eventually break down, causing a decrease in progesterone levels and leading to the shedding of the uterine lining
the uterine lining will continue to thicken

Explanation:

If fertilization does not occur, the corpus luteum (which forms from the follicle after ovulation and produces progesterone to maintain the uterine lining for pregnancy) breaks down. This leads to a drop in progesterone. Without progesterone support, the thickened uterine lining (endometrium) is shed, resulting in menstruation.

• The corpus luteum does not continue to produce progesterone at the same level without fertilization.
• The egg does not remain in the fallopian tube; it either gets fertilized (and moves to the uterus) or is eliminated.
• The menstrual cycle does not stop; instead, menstruation occurs as part of the cycle.
• The uterine lining does not continue to thicken; it is shed.

Answer:

The corpus luteum will eventually break down, causing a decrease in progesterone levels and leading to the shedding of the uterine lining.