When an egg goes into the Fallopian tube after ovulation then fertilization takes place. There are more chances of conception when the sperm makes its way to vagina within 24 hours of entering into it.When the first month of this conception ends then the embryo becomes 0.25 cm of 10th part of an inch long.The heart starts beating.
The whole development of the baby passes through different stages and to study it conveniently,we have divided into nine months.Check out the prenatal baby development in below paragraphs:
Prenatal Baby Development
In the first month of pregnancy,most of the things will occur like the conception,fertlilization and implanatation.When a female ovulates then the egg is normally fertilized within 24-48 hours and a single fertilized egg divides itself and is known as zygite.When an egg is fertilized then many things like the gender of the baby,color of hair and color of eyes can be determined within 7-10 days of fertlization.
The implanation has to take place in the uterus to rule out a case of ectopic pregnancy.The amniotic sac,umbilical cord and yolk sac starts forming in this month and by the end of this month,the baby becomes 2 mm long.
In the second month, the baby is considered as a fetus.The major organs of the bay like heart,neural tube,arms,leg and liver begin to form.The heart starts beating and it can be checked with an ultrasound.The formation of placenta starts with the emergence of eyes,ears,nose,bones,mouth etc. The fingers and toes also are formed but they are webbed into the other part of the womb.Brain and cranial nerves also formed.The sex organs of the baby become visible.The baby is ½ to ¾ inch long and weight is around one to two grams.
In the third month, the ultrasound report gives the view of the baby’s arm and legs.The Doppler can be used to diagnose the heartbeat of the baby.
Although sex organs are developing but it is difficult to tell about the gender as they are very tiny.The face takes a shape and the baby becomes 3-4 inches long with a weight of one ounce.
The formation of teeth and hair has started in this month. The baby starts taking movements and becomes an active baby.The mother of the baby starts the falling movement of the baby in the fetus. Digestive system is formed.The first stool of the baby known as meconium is present in the intestines.The baby’s gender can be traced and the baby is 5-6 inches long and weight ranges between 5-8 ounces as fourth month ends.
The body of the baby is covered by fine hair known as lanugo.The eyebrows and eyelashes starts developing.The baby starts sucking and swallowing.
The skin is protected by a vernix which is a white lanolin.The baby can hear now as ears are developed.The baby is 7-8 inches long and weighs ¾- 1 pound towards the end of fifth month.
In the sixth month,the immune system of the baby is developed and the antibodies in the body are created.The hand grip reflex and startle reflex is also developed.Lungs are developing and the formation of alveoli also takes place.The overall looks resemble a human being.The baby is 9-10inches long and weight is around 1.5-2.4 pounds.
The baby can cry in the womb in the seventh month. The eyes become open. The activeness of the baby increases as lot and sometimes he/she kicks his/her mother also.
The body fat tends to increase and bones are fully developed.The weight of the baby becomes 3-3.5 pounds and 11 inches long.
All the body parts are developed by eighth month and only they have to grow further and become mature to deal with the life outside the womb.Most of the time baby sleeps.Although the baby has cramped for space but still is an active baby.The size of the baby becomes 12 inches long and weight is near 5-6 pounds.
In ninth month,the baby prepares for the birth.The baby head will take a turn to get prepared for the birth.The size and weight of the baby varies considerable among different babies but a typical range of between 7-8 pounds of weight and length of 19-21 inches.