Question

Draw a mammalian embryo immediately before, during, and after embryonic folding in transverse and sagittal views. Label the amniotic sac, yolk sac, foregut, midgut, hindgut, allantois, connecting stalk, mesoderm, and coelom.

Answer 1

Embryonic folding in mammalian embryos is a critical process that transforms them from a flat sheet of cells into a three-dimensional structure. It involves the formation of a C-shape and the incorporation of the yolk sac into the primitive gut. Various structures such as the amniotic sac, foregut, midgut, hindgut, allantois, connecting stalk, mesoderm, and coelom are formed as a result of this process.

Step-by-step explanation:

The process of embryonic folding in mammalian embryos is a crucial step in their development, shaping them from a flat sheet of cells into a three-dimensional structure.

It involves folding laterally and at both ends, forming a C-shape.

During this process, the amniotic sac envelops the embryo, and the yolk sac is incorporated into the primitive gut.

The foregut, midgut, hindgut, allantois, connecting stalk, mesoderm, and coelom are all important structures that develop as a result of embryonic folding.