As the baby grows in the womb, it experiences many changes. The changes and the whole experience are described as the fetal development. There are three major divisions of fetal development. The three divisions are conception, embryonic period and fetal period.
The first stage conception is a very short stage, it is the time when the sperm meets the egg and then they are fertilized and travel down to the uterus. The next stage is the embryonic period which is considered to be the most critical period in the fetal development.

 

 

This stage starts from the 2nd week and lasts up to the 11th week. The heart beat of the child who is growing in the womb can be detected by the sixth week.
At the 8th week the teeth of the unborn child starts to form and the intestines also starts to take shape. By the end of the 2nd stage most of the organs started to develop. After the 11th week the last and the longest stage of the fetal development commence.

 

 

From the 11th week to 16th week the bones start to harden and the liver and kidney starts to begin functioning. Vocal chords, nails, genitals and hair also develop in the same period.
The rate of development slows down after the 21 weeks and after the 24th week the eyebrows and eyelids are completely formed. From 25 to 28 week the body of the unborn child continues to grow. Lungs get prepared to start breathing just after the birth. After the 28th week a baby can be born and the survival chance is 90% and there will no issue except a small issue regarding breathing. At the 37 week the baby is complete and ready to be born, after this time no further development can be done and no development complications are occurred if the baby is born after the 37th week.