Menstrual Cycle

Menstrual Cycle – MCQs

All are true about ovarian cycle except

A. It is the midcycle LH surge that initiates the resumption of meiosis-1 in the primary oocyte

B. Oocyte maturation inhibition (OMI) factor is secreted by the theca cells

C. Zona pellucida, a glycoprotein layer is secreted by the growing oocyte

D. One ovarian follicular cycle is 85 days

FSH control of follicular growth starts at

A. Preantral stage

B. 2-5 mm size

C. 5-9mm

D. More than 12mm

Dominant follicle selection is based on the following fact except

A. Highest antral concentration of estrogen

B. Lowest antral concentration of estrogen

C. Maximum receptors for FSH on granulosa cell

D. Lowest concentration of androgen

All are content of follicular fluid except

A. Androgens



D. Prolactin

Earliest evidence of ovulation is –

A. Vacuolated theca cells
B. Vascularization of granulosa cells
C. Abundance of liquor folliculi.
D. Subnuclear vacuolation of endometrium

Which of the following represents the change in a corpus luteum

A. Multiplication of granulosa cells & compression in size

B. Granulosa cells become spherical in shape

C. Dense nuclei

D. Frothy cytoplasm

Regression of corpus luteum is due to

A. Withdrawal of tonic LH support

B. Fall in the level of estrogen

C.Decreased secretion of progesterone

E. Fall of both estrogen and FSH

In short

  • LH hormone, with adequate number of LH receptors is the key factor of adequate corpus luteum formation.
  • The follicles containing high androgen to estrogen ratio are destined to undergo atresia. 
  • Final maturation of the follicle is achieved by the combined effect of FSH and LH.
  • The theca cells and the stroma of atretic follicles produce more androgens in the mid cycle. This raised androgen level enhances further atresia of the small follicles.

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