KROK 1 2014 – Question 173 · KROK (Medicine) · Histology, Cytology, and Embryology
Histological specimen of a 10-day human embryo represents 2 contacting sacs (amniotic and yolk sacs). Specify the structure that separates the amniotic cavity from the yolk sac:
- A. Embryonic shield
- B. Floor of the amniotic sac
- C. Roof of the yolk sac
- D. Amniotic stalk
- E. Extraembryonic mesoderm
Hint
Think about the arrangement of structures at the end of the first week and a half of development and what physically lies between these two cavities.
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