The Normal Size Of The Fetus That The Pregnant Mother Needs To Know

Monitoring the baby's weight and length right from the womb is an important part of ensuring the baby is born healthy and normal development. At the same time, help mothers adjust their lifestyle and nutrition so that their children can gain weight appropriately.
Length and weight of fetus for each week of age
Measure the length and weight of the fetus by each week of age by the following:
From 8 to 19 weeks: Your baby's length is measured from head to buttock, because her baby's legs are bent in the fetus during the first half of pregnancy, so it is difficult to measure the exact length.
From 20 to 42 weeks: your baby's length is measured from head to heel, at this time the size and weight of the fetus has increased steadily.
After 32 weeks, your baby's weight will grow to the maximum, body contours are formed.
Table of fetal weight and length as standard
Fetal development by week of age
First trimester (0 - 13 weeks)
Weeks 4 - 5
Sperm and eggs have fused and created blastocysts, called "embryos".
The blastocysts are implanted in the uterine lining
The placenta begins to form and provide oxygen, nutrients to the growing baby while removing waste from the baby's blood through the umbilical cord.
Blood cells, kidney cells and nerve cells all grow


The embryo develops rapidly and the baby's external characteristics begin to form.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


Your baby's brain, spinal cord and heart begin to develop.
The baby's digestive tract begins to form.
It is during this time that during the first three months, the baby is most at risk of getting hurt from things that can cause birth defects. This includes certain drugs, illegal drug use, heavy alcohol use, infections like rubella and other factors.
Weeks 6 - 7
Arms and buds begin to grow.
Your baby's brain forms 5 different areas. Some cranial nerves are visible

Eyes and ears begin to form.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


The growing tissue becomes your baby's spine and other bones.
The baby's heart continues to grow and now beats in a steady rhythm. This can be seen by vaginal ultrasound.
Pump blood through the main vessels.
Week 8
All systems and agencies are launched and continue to grow.
Your baby's arms and legs have become longer.
Hands and feet begin to look like small oars.
Your baby's brain continues to grow.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


The lungs begin to form.
Week 9
Nipples and hair follicles form.
The arms grow and the elbows grow.
The baby's toes can be seen.
All the baby's vital organs have begun to develop.
Week 10
Your baby's eyelids have grown and start to close.
The outer ear begins to form.
Baby facial features become more different.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


Gut rotation.
By the end of the 10th week of pregnancy, your baby is no longer an embryo. Now it is a fetus, the stage of development until birth.
Weeks 11-13
Your baby's eyelids are closed and will not reopen until around the 28th week.
The baby's face is well shaped.
The limbs are long and slender.
Nails appear on fingers and toes.
Genitals appear.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


Your baby's liver is making red blood cells.
The head is huge - about half the size of a baby.
Your little one can now make a fist.
Tooth buds appear for baby teeth.
The development of the fetus in the womb
Second trimester (14 - 27 weeks)
Week 14 - 18
At this stage, the baby's skin is almost transparent.
Fine hair called lanugo grows on the baby's head.
Muscular and skeletal tissue continues to grow, and bones become stronger.
Baby begins to move and stretch.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


The liver and pancreas produce secretions.
Your little ones now make sucking movements.
Weeks 19 - 21
Your baby can hear.
Babies are more active, keep moving and floating around.
The mother can feel a vibration in her lower abdomen, she can feel the baby's first movements.
Week 22
Fluffy hair covers the baby's whole body.
Meconium - the first intestinal peristalsis of the baby, is performed in the intestinal tract.
Eyebrows and eyelashes appear.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


Babies are more active with increased muscle development.
The mother can feel the baby move.
A baby's heartbeat can be heard with a stethoscope.
Nails grow all the way to the baby's fingers.
Weeks 23-25
Bone marrow begins to make blood cells.
The lower respiratory tract of the baby's lungs develops.
Your baby starts storing fat.
Week 26
Eyebrows and eyelashes are well formed.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


All parts of the baby's eyes are developed.
Your baby may startle when responding to loud noises, the fetal senses develop
Footprints and fingerprints are forming.
An air sac forms in the baby's lungs, but the lungs are still not ready to function outside the uterus.
Third trimester (28 - 40 weeks)
Weeks 27 - 30
Baby's brain is developing rapidly.
The nervous system is developed enough to control certain functions of the body.
Your baby's eyelids may open and close.
The respiratory system, when immature, produces surfactants. This substance helps the airbag fill the air.


The Normal Size Of The Fetus That The Pregnant Mother Needs To Know


Weeks 31 - 34
Your baby grows quickly and increases much fat.
Breathing occurs, but the lungs are old.

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