How Does an IUD Work as a Contraceptive

question 49

Multiple Choice

How does an IUD work as a contraceptive?

• A) It's inserted in the uterus and prevents the endometrium from developing so an embryo cannot implant.
• B) It's inserted into the uterus and prevents sperm from getting to the oviduct.
• C) It's not too clear how they work but they are effective.
• D) It's inserted into the uterus and kills any sperm that get above the cervix.
• E) It's inserted into the uterus and prevents development of the corpus luteum so a pregnancy cannot be maintained.

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