Fetal Development

Chronology of a New Life

Click here for fetal heart beat, which is detected at just 3 WEEKS!

Fertilization?

Your child begins the first day of his or her life within your body. At this point, the sperm and egg combine to form a new human being who carries enough genetic information as 50 sets of a 33-volume encyclopedia. This DNA will determine all of this little person’s physical characteristics and much of his or her intelligence and personality.

Day 2?

Your baby is three cells big. His cells will continue to divide as he starts down your Fallopian tube toward your womb, where your baby will get the food and shelter he needs to grow and develop.

Day 6-7?

Implantation into your uterus begins, and your baby continues to grow. As her cells multiply, they differentiate to perform specific functions – circulatory, muscular, neural and skeletal.

2 Weeks?

Implantation is completed around this time, and you miss your first menstrual period.

3 weeks?

Your baby’s heart, brain, spinal column, and nervous system are almost complete and her eyes begin to form. Your baby’s heart begins to beat.

4 Weeks?

Your little boy is now approximately 1/4 inch long. The blood flowing in his veins is completely different from your blood! Kidneys, the liver and the digestive tract are already taking shape.

5 Weeks?

Your daughter’s face is taking shape; her forehead, eyes, nostrils and mouth are evident; external ears are beginning; hand and foot plates appear in her limb buds.

6 Weeks?

The brainwaves of your little boy can be recorded. His different muscles begin working together.

7 Weeks?

Your baby’s fingers and toes are fairly well defined, and fingerprints—a unique and defining feature of every human being—are permanently engraved on her skin. All of her organs are present, complete, and functioning (except the lungs).

9-10 Weeks?

All areas of your baby’s body are sensitive to touch. He sucks his thumbs, swallows, squints, frowns and puckers his brow. If his palm is stroked, he will make a tight fist.

11-12 Weeks?

Your baby now has fingernails, toenails and working taste buds. She can also make all facial expressions, including a smile.

13 Weeks?

Although this baby was already a boy or girl at fertilization, his or her sex is now identifiable.

4 Months?

Your little baby’s heart is pumping six gallons of blood every day, and you’ll soon start to feel him jumping around and turning somersaults, exercising the muscles and lungs he will need to live outside your womb. Rapid eye movement can be recorded while he’s sleeping, indicating that he is dreaming.

5-6 Months?

Your child now weighs about one pound and is a foot long. If she is born now, she would have a 50 percent chance of surviving with the help of dedicated doctors and nurses.

7-8 Months?

Your baby can open and close his eyes and recognizes your voice! His weight continues to increase. If he is born now, his chance of surviving increases to 90 percent.

9 Months?

When she is ready to be born, she will release hormones to trigger labor. Your child may weigh between 7 and 9 pounds and can be between 18 and 21 inches long!

Click here for even more information on the human embryo.

Source: American Life League