Which of the Following Statements Concerning Implantation Is Correct

question 244

Multiple Choice

Which of the following statements concerning implantation is correct?

• A) Implantation is accomplished by enzymatic activity of the trophoblastic layer of the blastocyst.
• B) The endometrium at the site of implantation is converted into the nutrient-rich decidua.
• C) Implantation occurs within 24 hours after fertilization.
• D) Both (a) and (b) above are correct.
• E) All of these answers are correct.

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