An egg is released from a womans ovary each month. Fimbriae at the end of the fallopean tube help direct the egg inside. Sperm travel into the fallopean tube, where one sperm fertilizes the egg.
The embryo travels for up to nine days through the fallopean tube. If does not reach the uterine cavity, prior to history and tubal damage, it can implant in other tissue and cause an ectopic pregnancy.
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