LH surge

 

This occurs at midcycle. The leutinizing hormone which is produced by the anterior pituitary chromophil gonadotroph cell  releases considerable amount of LH which causes ovulation after 36 hours. LH surges also causes the conversion of cervical mucus from pap to eggwhite and ovulation occurs at the last day of eggwhite. It causes the conversion of Graffian follicle to the corpus luteum of menstruation which may become converted to corpus luteum of pregnancy after fertilization and the production of hCG.

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