80 Anatomy, Histology, and Cell Biology
28.In the developing embryo, the edge of the ectoderm is continuous
with which of the following?
a. Chorion
b. Amniotic membrane
c. Yolk sac lining
d. Extraembryonic mesoderm
e. Adventitia of the umbilical vessels
29.Which of the following processes is responsible for fusion of the
paired dorsal aortae?
a. Lateral folding
b. Craniocaudal folding
c. Looping of the heart tube
d. Neurulation
e. Gastrulation