-
Period: to
Prenatal Development
-
First month
The baby is only .1 to .2 millimeters and at this stage is called a blastocyst. At three weeks pregnant, your child has already developed all his genetic material and the sex is already decided. -
Second Month
The baby is now a little under an inch long but has developed into a tiny human being. The heart is beating, the brain is developing and she has developed all her limbs as well as hands and feet. The eyes have not fully developed. -
Third Month
The baby is now officially a fetus, and is between two and four inches long. By the end of the first trimester all organs are present, and even fingernails are developing. The baby is also moving her arms and legs. -
Fourth Month
The baby is five to six inches long and weighs up to four ounces. Baby’s face and heart are fully formed at this point, though the lungs are still developing. Baby’s eyes will open during this month and he or she will begin feeling the urge to suck. -
Fifth Month
baby is now about 10 ounces and six to nine inches long. The Baby is covered with a fine protective hair. This month he or she will develop fingerprints and permanent teeth buds behind fully formed baby teeth. Little girls’ ovaries also develop at this time, and sex may be determined through ultrasound. -
Sixth month
The baby is about 10 inches long and weighs over a pound. The mother will be aware of baby’s movements as he or she stretches and hiccups. Baby’s eyes now open and close, vocal cords are functioning, and “finishing touches” like eyebrows have formed. -
Seventh Month
The baby is starting to develop fat under his or her skin. Baby’s now almost 12 inches long and weighs between two and four pounds. The child can now see, hear and taste, and the brain and nervous system are growing rapidly. -
Eigth Month
The baby’s brainwaves resemble those of a newborn by this time. He may be a foot (12 inches) or more long and weigh about five pounds. Lungs are still developing, but all other organs are complete. Movements may slow as the baby fills more of the uterus and has less room to stretch. By the end of the month, most babies are head down and descending into the pelvic area. -
Ninth Month
The Baby’s lungs are maturing, and he or she is shedding the layer of hair that protected him or her in the uterus. The baby’s brain is growing tremendously this last month. Baby measures about 18 to 21 inches long and weighs about six to eight pounds.
