What is the first event in the development of the face during the later part of the fourth week of prenatal development?

Question

Quizplus · Accepted Answer

The first event in the development of the face during the later part of the fourth week of prenatal development is disintegration of the oropharyngeal membrane.With this disintegration of the membrane,the primitive mouth increases in depth and enlarges across the surface of the midface.

What Is the First Event in the Development of the Face