Anat VQ C8e Neurogenesis (S*C)

The process of producing and developing cells in an embryo is called...

• organogenesis

• neurulation

• gastrulation

• embryos

During the stage of embryological development known as organogenesis the embryo exists essentially as three germ layers. What are the names of these layers of developing cells?

• endoderm, mesoderm, and ectoderm

• neuroglia, neural tube, mesenchyme

• neurons, astrocytes, oligodendrocytes

• brain, spinal cord, periphery

The process that folds an embryo's germ layers and is the earliest stage of the nervous system's development is known as...

• neurulation

• stimulation

• gastrulation

• excitation

Neurulation starts with a flexible rod structure in the embryo called the...

• notochord

• spinal cord

• germ layer

• neural tube

How does the notochord help create the neural plate?

• It unfolds into the neural plate.

• It induces a change in ectoderm that prompts this development.

• It folds the neural plate into a neural tube.

• It infects and takes over the germ layers.

By having the neural plate fold it so that the ends of it are touching (in a sort of embryonic origami), the neural plate next becomes a...

• notochord

• spinal cord

• germ layer

• neural tube

What will the neural tube eventually become?

• The heart and veins

• The vertebrae

• A fully-functioning individual

• The brain and spinal chord

Where does the neural crest come from?

• It breaks off from the neural tube as it folds.

• It is folded up from the neural plate.

• It is broken off from the notochord.

• It comes from somites.

What will somites generally end up providing for the neural tube and later the spinal chord?

• The somites don't have anything to do with the neural tube.

• Structure and support

• Nutrients

• Germs

What are germ layers in an embryo?

• The outer walls of embryonic cells that protect them from disease

• Layers of cells that will turn into bacteria or viruses

• The three layers of cells that will form into the nervous system within an organism

• The bacteria that can infect an embryo