Question

What is the outermost germ layer that gives rise to the brain, spinal cord, and peripheral nerves?

Options

• Trophoderm

• Ectoderm

• Mesoderm

• Endoderm

Answer 1

The ectoderm is the outermost of the three primary germ layers. It differentiates to form the brain, spinal cord, peripheral nerves, skin epidermis, hair, nails, eye lens, and cornea during embryonic development.