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Why the Enterobious vermicularis female needs to come out of the Colon and lay its eggs in the Rectum?

Because it does not need an intermediate host to complete its life cycle.

I'm not sure about your answer but i read that the female goes out and lay the eggs in the anus because the eggs need oxygen for their maturation. Something new to learn !!!

intresting,Thank you

sonik my dear do not waste your time with Q like this ..try to find out what Q most likely
you will face in exame.......good luck

Thanks for the advice, this was just a fun fact, i know this forum is for usmle content only but i am very curious. And i wanted to share the results of my curiosity with the forum.