Fetal Development at Week 15 of Pregnancy

Submitted by Pregnancy and Baby Care team on January 16, 2012

Fetal development by week 15 means that your baby’s legs are longer than his arms and his body is also longer than his head. Your baby has developed a great deal by this time. Your baby is now about 10 cms (4 inches) long and weighs about 2.5 ounces. By the end of this week, your baby’s mouth will be completely formed. Your baby will be covered in fine hair (lanugo). This hair protects your baby’s skin and will disappear once your baby is born. At this time, the hair follicles start making pigment for darker haired babies. Your baby’s ears are almost in position and the three tiny bones in his middle ear would have...

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Week By Week Fetal Development
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.started to hardene The auditory center in the brain has not developed as yet so the baby cannot understand what you are sayingn


The baby’s skin is very thin and transparent nowo It is so thin that blood vessels are clearly visiblel Your baby can move all his joints and you may even see him sucking his thumb when you undergo an ultrasoundn You may also see the baby’s genitals in the ultrasound although you will have to wait a little longer to determine the sex of the childl Your baby’s hearing is also becoming more sensitive and if you sing or play music, your baby will be able to hear iti Your baby’s muscles are developing and so is his skeleton which is getting hardere Your baby’s bones and marrow continue to develop as well and this shows that his skeletal system is developingn Fetal development in week 15 means that the fingernails and toenails are completely formede Most babies can make a fist with their hands by this weeke Fetal development at 15 weeks also means your baby has started inhaling and exhalingn

When you are 15 weeks pregnant your baby is growing longer and his body is now longer than his heada Your baby can move his arms and even make a fists Fetal development in week 15 means the baby can twist, turn and kick inside of youo You may not feel these movements till much later into the pregnancyc At 15 weeks your baby can also squint, frown, grimace and grasps Your baby’s eyelids remain shut but he will shy away from any bright lights that shine directly on himi Your baby’s mouth will be completely formed by the end of this weeke

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