By now, the embryo’s heartbeat can be clearly heard on sonogram, and blood cells are circulating throughout the body. All of the major organ systems are now forming. Basic facial features appear and arms and legs continue to grow. Though unfelt by the mother, the embryo’s body and limbs begin to move.
Essential Facts
• The embryo now possesses over 90 percent of the structures found in adults.
• The umbilical cord is now visible.
• There is reflexive response to touch and primitive brain activity can be measured.
• Ovaries and testicles begin to form.
• Lungs are present.
• Taste buds, tooth buds, and eyelids appear.
• The forehead is large and the external genital organs differentiate into female or male.
• The outer ears have begun to take shape.
For Further Discussion
This is a critical stage because the embryo’s developing organs are susceptible to toxins ingested by the mother. Once she knows she’s pregnant, it’s important for the mother to take good care of herself and her child by avoiding cigarettes and alcohol, eating nutritious foods, and taking prenatal vitamins when possible.