At the onset of the embryonic period, the _____ appears. It will eventually become the neural tube.

Question

Quizplus · Accepted Answer

The primitive streak appears at the onset of the embryonic period and is the first sign of gastrulation. It eventually gives rise to the three germ layers which differentiate into all of the body's tissues and organs. The neural tube, which will become the brain and spinal cord, forms from the ectoderm layer.

At the Onset of the Embryonic Period, the _____ Appears