Treating Physician Law and Legal Definition. A treating physician is defined as âsomeone who provides you, or has provided you, with medical treatment or evaluation and who has, or has had, an ongoing treatment relationship with you.
In the first four weeks from conception, fetal growth of the ovum begins with development of the spinal cord, nervous system, gastrointestinal system, heart and lungs. By eight weeks, in the embryonic stage, the face is forming, arms and legs move, the baby's heart begins beating and the brain and other organs form.
Video: Embryonic Stage Development: Definition & Concept. There are three basic stages of mammalian gestation: germinal, embryonic, and fetal. This lesson focuses on embryonic development and the stages of growth between implantation and the point when an embryo becomes a fetus. Human Growth and Development: Help and Review / Psychology Courses.