The graph shown below depicts the hormonal changes that occur during a typical female reproductive cycle. Day one on this graph represents the onset of menses. Which of the following answer selections lists the correct labeling for the hormones shown on the graph?
A)A = FSH, B = LH, C = Estrogens, D = Progesterone
B)A = FSH, B = Estrogens, C = LH, D = Progesterone
C)A = LH, B = FSH, C = Estrogens, D = Progesterone
D)A = FSH, B = Progesterone, C = LH, D = Estrogens
E)A = Relaxin, B = Inhibin, C = Estrogens, D = Progesterone

Question

The graph shown below depicts the hormonal changes that occur during a typical female reproductive cycle. Day one on this graph represents the onset of menses. Which of the following answer selections lists the correct labeling for the hormones shown on the graph? 
A)A = FSH, B = LH, C = Estrogens, D = Progesterone 
B)A = FSH, B = Estrogens, C = LH, D = Progesterone 
C)A = LH, B = FSH, C = Estrogens, D = Progesterone 
D)A = FSH, B = Progesterone, C = LH, D = Estrogens 
E)A = Relaxin, B = Inhibin, C = Estrogens, D = Progesterone

Quizplus · Accepted Answer

On the graph, LH (luteinizing hormone) peaks around day 14 and triggers ovulation. FSH (follicle-stimulating hormone) levels also rise during the first half of the cycle and stimulate the growth of follicles in the ovaries. Estrogen levels rise as the follicles mature and peak just before ovulation. Progesterone levels increase after ovulation and prepare the uterus for possible implantation of a fertilized egg. This pattern of hormonal changes is consistent with labeling A as FSH, B as Estrogens, C as LH, and D as Progesterone.

The Graph Shown Below Depicts the Hormonal Changes That Occur