KROK 1 2018 – Question 96 · KROK (Medicine) · Histology, Cytology, and Embryology
A specimen of a 10-day-old human embryo shows two interconnected sacs (amniotic and yolk sacs). Name the structure located in the place where these two sacs connect:
- A. Floor of the amniotic sac
- B. Roof of the amniotic sac
- C. Extraembryonic mesoderm
- D. Embryonic shield
- E. Amniotic stalk
Hint
At this stage the sacs are only the first two cavities next to the embryo. Ask which listed structure is a wall of one sac, which lies outside both sacs, and which lies between them.
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