Multiple choice

At what week is the embryo now referred to as a fetus?

  1. by the end of the 8th week

  2. by the end of the 10th week

  3. by the end of the 5th week

  4. by the end of the 7th week
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In human prenatal development, the embryonic stage lasts through the end of the eighth week following fertilization. Beginning at the ninth week, or the end of the eighth week, the developing organism is officially classified as a fetus.

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