1 249
订阅者
-724 小时
-547 天
+15830 天
帖子存档
1 249
Sacrococcygeal teratomas occur due to incomplete regression of the primitive streak by the end of week?
1 249
Prenotochordal cells moving in a cephalic direction are halted by which landmark?
1 249
During gastrulation, epiblast cells that displace the hypoblast layer create the?
1 249
By the end of the 3rd week, the embryo is suspended in the chorionic cavity by the?
1 249
Cells migrating through the caudal part of the primitive streak form the?
1 249
Small vacuoles appear in the syncytium and fuse to form large lacunae during?
1 249
Exocoelomic membrane (Heuser's membrane) is formed by flattened cells originating from the?
1 249
The primitive streak shrinks and completely disappears by the end of the?
1 249
On Day 8, the cells of the hypoblast layer adjacent to the blastocyst cavity are?
1 249
The temporary connection between the amniotic cavity and the yolk sac cavity is the?
1 249
Primary villi are formed by the proliferation and penetration of?
1 249
Cells migrating through the midstreak region during gastrulation form?
1 249
The buccopharyngeal membrane consists of tightly adherent layers of?
1 249
Extraembryonic mesoderm is divided into splanchnopleuric and somatopleuric layers by the?
1 249
The primitive streak becomes clearly defined on the surface of the epiblast by day?
1 249
The source of all three germinal layers (Ectoderm, Mesoderm, and Endoderm) is the?
