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(A) In the menstrual cycle,the hormonal levels change as follows:$1$. $C$ shows a sharp peak around day $14$,which is characteristic of the $LH$ surge

Vedclass · Accepted Answer

$A-FSH, B-Oestrogen, C-LH, D-Progesterone$

Vedclass · Answer

(A) In the menstrual cycle,the hormonal levels change as follows:$1$. $C$ shows a sharp peak around day $14$,which is characteristic of the $LH$ surge,triggering ovulation.$2$. $B$ represents Oestrogen,which rises during the follicular phase to stimulate the uterine lining.$3$. $A$ represents $FSH$,which shows a small peak before ovulation to stimulate follicle development.$4$. $D$ represents Progesterone,which rises significantly during the luteal phase (post-ovulation) to maintain the endometrium.Therefore,the correct identification is $A-FSH, B-Oestrogen, C-LH, D-Progesterone$.

The following graph shows the relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones $A, B, C$ and $D$.

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$\text{Menstrual cycle} \quad \quad \quad \text{Oestrous cycle}$

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