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Fetal Growth N Development

Fetal Growth N Development

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Fetal growth N Development
Unborn babies grow.
They development from day one.
Living things all grow.

Fetal Growth N Development
Conception/Fertilization

Your baby grows from the moment of conception. Scientists sometimes seem to split conception and fertilization. FOr the purpose of this page, you won’t find me arguing the difference between the two. No one disputes that growth does begin from day one. When sperm from a man and the woman’s egg meet, a baby begins. We know this. Baby starts as a zygote, a one-celled organism. This is how all of us started. You did. I did. Each of us did. No exceptions. Technically, a baby isn’t a fetus just yet. He or she is isn’t yet an embryo Source. As a single cell organism, the tiny zygote has all that is needed to determine personhood.

DNA is the sum of all that we are. DNA decides many things. The color of your eyes. Your skin’s color. Your hair’s color. How tall you’ll be. The set-point of your body weight. Your personality and temperament. DNA contains so much information that crime investigators often base their investigations on it. From day one, that is how we start out! The one-celled zygote has 23 chromosomes. The male set of chromosomes determine whether baby is male or female. Maleness or femaleness depends on whether the zygote has an extra X or Y chromosome. Source

Fetal Growth N Development

Fetal Growth N Development
First Weeks

Baby starts out as a one-celled organism. Immediately afterwards baby’s one cell is rapidly dividing into new cells. Development moves rapidly at this time. And most women don’t know they’re pregnant at this time. In these early days, baby continues to rapidly divide cells. At around this time, baby develops into an embryo. Source. Much growth has taken place at this time. Each of us has been in this embryonic stage. You. Me. Everyone. Six to ten days after conception/fertilization, baby comes into contact with the wall of mom’s uterine wall Source Around this time, baby undergoes implantation. This is when a baby finds a home in the mom’s unterus. At around this time, a pregnant woman may undergo bleeding. This is called implantation bleeding. It shouldn’t be a cause for alarm.

Fetal Growth N Development

Fetal Growth N Development
Week 4

Baby’s fourth week means finding a home inside mom. By this time, most women aren’t yet aware of being pregnant. But they may have been experiencing pregnancy symptoms. These include sore breasts, nausea (maybe vomiting), a frequent need to relieve yourself, and low energy. By this time baby becomes a fetus. Yet still baby is, scientifically speaking, still an embryo. Source. Baby makes his or her home in mom’s placenta and receives all nourishment through mom’s umbilical cord. (Source. Pregnancy has become established at this time. Symptoms may become more pronounced. Mom’s body works hard to nourish baby through all her baby-making materials. That’s why she needs to take good care of herself during her pregnancy.

Fetal Growth N Development

Fetal Growth N Development
Week 5

Baby enters week five. At around this time, conditions make it possible for baby to embed in its amniotic sac. Source. This sac is a fluid-filled sac that protects the baby. By this time, some women may be suspecting pregnancy. Whether she knows it or not, everything mom does filters to her baby. EVerything she does, she does for at least two. Herself and her baby (babies). At around this time, cells keep dividing and rapidly multiplying Source At around this time, baby is around 8 mm (0.32 inch long)

Fetal Growth N Development
Embryo to Fetus-Second Month

Baby normally gets bigger at around this time. He or she may be normally around 13 mm (0.53 inch). Baby is still small. At around this time, many women may suspect or be aware of pregnancy. Pregnancy makes lots of demands on a woman’s body. At this time, symptoms may be pronounced. It’s still the first trimester. At the end of the second month, baby may normally reach a size of 30 mm (1.2 inches). Again, still small. At this time, science considers baby to no longer an embryo but a fetus until birth. Source Pregnancy and fetal development are quite established by this time. The sixth week is the earliest when a baby’s heartbeat can first be detected.

Fetal Growth N Development

Fetal Growth N Development

Fetal Growth N Development
Rest of the First Trimester

Baby’s growth moves to a whole new level. in the 7th and 8th months, baby’s organs form and begin to look “more human.” Source Translation: He or she looks more and more like a baby. Less and less like “a clump of cells.” That’s because baby’s growth has moved from dividing or multiplying cells to growing organs. At the end of the first trimester, most women know they are pregnant. And some symptoms of early pregnancy may disappear as baby grows and mom gets bigger. It’s during month three that baby first “fully resembles a human being” though head is quite large for his or her body. Source.
Baby’s physical growth increases. At the end of the first trimester, baby is normally 75 mm and 3 inches. SourceHe or she has reached a milestone!

Fetal Growth N Development

Fetal Growth N Development
Second Trimester

In the second trimester, baby’s growth has stabilized. Baby’s faces become easy to tell apart and they begin to develop secondary sexual organs, such as vaginas for baby girls and penises for baby boys. Source And ultrasound can pick these up! At around this time, in the 20th week and fifth month, we believe that baby can now feel pain. At the end of five moths, baby is 185 mm and 7.3 inches. Source And in the sixth month, baby gets even bigger. By this time, moms is “showing.” And it’s normal for her to feel movement.

Fetal Growth N Development
Third Trimester

Most fetal development has taken place by now. Baby is mostly building on the foundation laid during the moths spent as zygote, embryo and early fetus. Now she is solidifying her growth. By the 7th month, baby is normally 270 mm and 10.6 inches. And, by her 9th month, she normally grows to 360 mm and 14.2 inches. And gain 7 pounds at 7 months. Source It’s also normal for babies to be a little bigger or smaller than these sizes.

A full-term unborn baby

Fetal Growth N Development

This meme was created with ImageFlip.com.

Photos are courtesy of Human Coalition. Facts are sourced by Damir Sapanir and Leslie B. Arey in PRENATAL DEVELOPMENT.

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