Multiple choice

Which of the following embryonic layers produces human chorionic gonadotropin (HCG)?

  1. Trophoblast

  2. Primitive streak

  3. Hypoblast

  4. Epiblast

  5. Chorion

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

Chorion is produced by somatopleuric extra-embryonic mesoderm inside and trophoblast outside. It produces human chorionic gonadotropin (HCG).