Exam 3: Basic Embryology

The ability of one group of cells to influence development of neighboring cells is called gastrulation.

Somites differentiate into dermatomes, myotomes, and ________.

Identical twins arise from the splitting of a three-layered embryo.

This develops into the epidermis of the skin.

________ is a clinical procedure that provides a genetic profile for a fetus.

The dermis of the dorsal body region is derived from somites. However, the dermis of the ventral body region is derived from

The neural tube develops from this layer.

The cavity in the mesoderm that ultimately develops into the peritoneal, pericardial, and pleural cavities is called:

Defects in the development of the neural tube may be linked to inadequate dietary intake of ________.

Most organ systems are fully formed and ready to function in the fetus by the sixth month. Which of the following systems is the exception to this generalization because it takes longer to finish development?

The term bilaminar disc refers to the embryonic ________ and ________.

The wall and lining of the gut develop from the mesoderm and ________, respectively.

Which of the following does not distinguish mesoderm from either endoderm or ectoderm?

Figure 3.1 Use the diagram above to answer the following questions. -Which letter indicates the zygote?

Mesenchyme would refer to ________ but not ________.

The yolk sac, formed from the hypoblast, has little yolk in the human embryo.

The expression "breaking water" during birthing refers to the

The gonads arise from what embryonic structure?

The correct sequence for embryonic development is

Which of the following is not a germ layer?