Multiple choice

How many days after fertilization, the blastocyst attaches to the wall of the uterus?

  1. 2-3 days

  2. 5-7 days

  3. 8-10 days

  4. 10-12 days

  5. 13-15 days

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

5-7 days after fertilization, the blastocyst attaches to the wall of the uterus (endometrium). When it comes into contact with the endometrium it performs implantation.