the implantation of a fertilized egg occurs on the wall of the uterus.
the implantation of a fertilized egg occurs on the wall of the uterus.
where does the implantation of a fertilized egg occur?
wall of the uterus
implantation (human embryo)









































in humans, implantation is the stage of pregnancy at which the embryo adheres to the wall of the uterus. at this stage of prenatal development, the conceptus is called a blastocyst. it is by this adhesion that the embryo receives oxygen and nutrients from the mother to be able to grow.









































in humans, implantation of a fertilized ovum is most likely to occur around nine days after ovulation; however, this can range between six and 12 days.









































section::::implantation window.
implantation (human embryo)
the primary mechanism of action of progestogen-only emergency contraceptive pills is to prevent fertilization by inhibition of ovulation. the best available evidence is that they do not have any post-fertilization effects such as the prevention of implantation. the u.s. fda-approved labels and european ema-approved labels (except for hra pharma's "norlevo") levonorgestrel emergency contraceptive pills (based on labels for regular oral contraceptive pills) say they may cause endometrial changes that discourage implantation. daily use of regular oral contraceptive pills can alter the endometrium (although this has not been proven to interfere with implantation), but the isolated use of a levonorgestrel emergency contraceptive pill does not have time to alter the endometrium. in march 2011, the international federation of gynecology and obstetrics (figo) issued a statement that: "review of the evidence suggests that lng [levonorgestreol] ecps cannot prevent implantation of a fertilized egg. language on implantation should not be included in lng ecp product labeling." in june 2012, a "new york times" editorial called on the fda to remove from the label the unsupported suggestion that levonorgestrel emergency contraceptive pills inhibit implantation. in november 2013, the european medicines agency (ema) approved a change to the label for hra pharma's "norlevo" saying it cannot prevent implantation of a fertilized egg.
emergency contraception