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Wednesday, December 15, 2010

Perkembangan Bayi : Trimester 1

Pasti ramai ibu-ibu di luar sana yang nak tau perkembangan bayi dalam kandungannya kan? Sama juga macam Mama. Kalau nak scan selalu tu takut pulak ada kesan sampingan pada baby walaupun kalau ikut kajian takde kesan sampingan yang bahaya. 

Kat sini Mama nak share sedikit info tentang perkembangan bayi dalam kandungan pada TRIMESTER PERTAMA. Insya-Allah di entri akan datang Mama kongsikan pulak perkembangan pada Trimester Kedua dan Ketiga ya...

WEEK 1 : IN THE BEGINNGING...
embryo in first monthIt’s been a momentous past couple of days—even if you don’t know it yet. At some point roughly 1.5 – 3.5 million sperm took aim at your fallopian tubes and one superior little seed hit the target spot on. The now fertilized egg is still inside your fallopian tube and is already merging with the sperm to become a zygote. Cell multiplication is occuring at an astonishingly rapid rate. Your little zygote will spend the next 7-10 days dividing and multiplying as they slowly descend into the uterus, where it will nestle into the already cozy blood-rich uterine wall. The implantation process may result in a little spotting for some, caused by the sloughing off of uterine wall at the implantation site. This is perfectly natural and not a cause for concern. When your little zygote is finally implanted, it is a blastocyst measuring about 0.1 – 0.2 mm. This will be your baby’s spatially-challenged home for the next 38-40 weeks.

WEEK 2 : AND WE'RE ON OUR WAY!
embryo in first monthYour little blastocyst is now separating into two distinct parts: the amniotic cavity (or yolk sac) and the embryo (your baby-to-be). The yolk sac’s main job is to protect and nourish your baby until the placenta is fully formed. Right now, the placenta is just beginning to take shape, but won’t be complete for another 8 weeks or so. The beginnings of the umbilical cord are visible and partly functional, although it is still not fully formed.




WEEK 3 : YOUR TEENY TINY MIRACLE PEAR
embryo in first monthAlthough your belly is still the same size and shape as it was pre-pregnancy, a plethora of amazing and dynamic changes are taking place despite this fact. Right now your little zygote is already 1.5 – 2.5mm in size. This is quite a change from the microscopic pack of cells you had just two weeks ago. Your microscopic little one is already composed of three complex “germ” layers: the ectoderm, endoderm and mesoderm. Although you could hardly see them at this point, these layers are the beginnings of your baby's nervous system and brain, stomach and inner organs, and skeleton and connective tissue. Your baby is also starting to take on recognizable physical dimensions somewhat comparable to a very tiny pear. The round part of the pear will eventually become the head and the pointy part will be the spine. Perhaps the best part of this week is that somewhere around the 21st day, your miraculous little pear will have a beating heart, although the heart chambers and valves will not be completely developed for another couple weeks.

WEEK 4 : WAG THAT TAIL!
embryo in first monthBy the end of this week the round and pointy ends of your little pear-shaped baby will be slightly more exaggerated and their body will look more like that of a miniature manatee. Despite your baby not looking particularly human without any eyes, ears or mouth, the earliest developments of what will become the larynx, internal ear, and eye lens are already forming, although you’d have to be a trained expert to recognize them for what they’re going to be in the future. Likewise, tiny bumps are forming on your little embryo which will eventually be their cute little arms, elbows, fingers, legs, knees and toes. What’s more your little swimmer will have a teeny tiny tail by the end of this week-- but don’t worry, it’s just the end of their developing spinal cord! A microscopic photo would reveal what seems to be their vertebrae filling out the spine and tail. Although they aren’t bones yet, but rather, the “bone seeds” that will give rise to your baby's tiny vertebrae, ribs and sternum.

WEEK 5 : TEENY TINY BABY STEPS
embryo in second monthThe changes to your growing embryo are not quite as drastic this week as they've been in the last few weeks. Growth is now largely focused on their little head, which is starting to develop much more rapidly than the rest of their tiny body. This is because their amazing brain is undergoing some very crucial and rapid development in order to effectively regulate their heart rate, blood circulation, and other vital functions. As for the rest of their miniature body, what were simple limb buds last week are limb flippers this week and the tail is more expressed. Amazingly, within a mere five weeks your little miracle is already developing the rudimentary forms of their liver, pancreas, lungs, stomach and nasal pits while their little heart is already increasing its circulation. Your baby is now a whopping 4-6mm in length.

WEEK 6 : THERE'S NAUSEA EVERYWHERE!
embryo in second monthThis is going to be a busy week for your amazing little embryo. Their brain is still growing remarkably fast; miniature hand plates are starting to develop and the early formations of what will be their fingers are already visible. Also, the lower limbs do not develop quite as fast, so they’re pretty much still flippers. Up until this point, your baby has been very curled up with the head and tail in close proximity, but this week their trunk and neck are beginning to grow and straighten as their tail recedes into its resting position in the back. Even though your little miracle is only 6 weeks old, they’re already capable of demonstrating reflex responses to touch!


WEEK 7 : WELCOME TO THE HORMONAL ROLLERCOASTER!

embryo in second monthYour baby is really beginning to develop more physical definition this week – their oversized head isn’t just large and oblong anymore, it’s actually a little bit pointy. The tiny receding tail bud is now starting to be overshadowed by the growth of their legs, which are now complete with knees and the beginnings of toes. Their eyes and ears are the most visible features on their head and their miniature bones are starting to harden throughout their body. You also have some variation on a boy or a girl at this point, although their genitals won’t be visible enough to determine which color cigars you’re going to buy until around the 16th week.

WEEK 8 : GOODBYE SEA CREATURE, HELLO BABY!
embryo in second monthWoohoo! You've got one whole inch of baby inside of you! Your little embryo has finally reached the one-inch mark (30mm). And if it were possible to take a peek, you could actually see your tiny baby without a telescope! What’s more, your baby is finally starting to take on some very distinct human features. For starters, their little tail (really just the spinal cord) has disappeared completely. It’s nice to know your baby can no longer be mistaken for a sea creature! Additionally, both their toes and fingers are prominent with very little, if any, webbing. Upper and lower limbs all show recognizable joints (elbows and knees) and the lower limb bones are starting to ossify. But don’t expect your baby to resemble either parent quite yet. Right now, your baby’s head is disproportionately larger than the rest of their body--making up almost half of your little one’s height and weight!

WEEK 9 : AN INCH TO GROW ON
fetus in third monthCongratulations! Your amazing growing baby has been accepted into to the fetus-club, a very exclusive and exiting new stage in their prenatal development. Basically, this means the little sweet pea has graduated from swimming embryo creature to a recognizable human being! This week in particular, the irises of their little eyes can function, but (frustratingly for them?) their eyelids remain fused shut for a while yet. Their external ears are formed and their inner ears are now filled with fluid—so your little one is already developing their sense of balance. Your baby's little swimmer legs are still relatively, although other bodily developments are going forward at a nice pace: their kidney is actually functioning now, which means they’ve started urinating (this might seem charming now but wait till you have to start buying diapers!).

WEEK 10 : GRADUATION DAY HAS ARRIVED
fetus in third monthYour astonishingly tiny baby has been hard at work growing as fast as possible—almost doubling in size in the past three weeks! Amazingly, you’re in for a repeat size doubling performance within the next three weeks! Your tiny champion still weighs less than a quarter of an ounce but has already completed the most critical stage of their development. Using Doppler technology, your doctor or gynecologist can let you hear their tiny rapid fetal heartbeats this week (145-165 beats per minute!). Chances for miscarriage are greatly reduced when the heartbeat can be detected, so take a sigh of relief if you’ve been needing one—it hasn’t been an easy ten weeks! What’s more, they’re getting ready to make their first baby poop! Your little one’s major organ systems are developing, including a functioning digestive tract capable of moving food all the way through their bowels. The final shiny gold star on their fetal behavior chart for the week: your little scrapper has already developed defense mechanisms to protect them on reflex!

WEEK 11 : JUST PLUM CUTE!
fetus in third monthMaybe you’ve noticed… your baby is a super-duper grower! Your lil' fetus will be gaining a substantial amount of weight this week and has already achieved fruit-size-status comparable to a plum. What's more, your little scientist is already starting to explore their body, focusing most intently on touching their head, and especially their face and mouth. Their mouth in particular will provide them with hours of entertainment. This happens not only because your baby is gaining coordination, and is therefore able to move a hand on command, but also because their palms have gained sensation and can actually “feel” what it touches.They're also developing their swallow reflex this week. And lastly, your baby's smelling and other olfactory senses will begin developing this week, which when combined with the maturing taste buds, will provide your baby with their first experiences of taste and smell.

WEEK 12 : YOUR UTERUS? YEAH, IT'S A SOFTBALL NOW
fetus in third monthEven though your little Einstein’s body is still growing quite rapidly 2 inches long right now, the overall super-speedy growth of their amazing brain continues to leave the head proportionately larger than the body— and is actually slightly more than one third of their total body mass! The head and neck are still straightening at this point as can be seen by their little chin lifting off of the chest. Your baby is also actively rehearsing “breathing” by using amniotic fluid to prepare the lungs for future air respiration.
The big news: your little pooper is now officially going to need diapers! Although a majority of the waste produced is transferred to the mother’s system for discharge (to avoid having it linger in the amniotic sac), some urine is released to the amniotic fluid and your baby will actually breathe it in before it passing it on to your for discharge. Not to worry, urine--in this particular form, is completely harmless to your baby.

WEEK 13 : FAREWELL FIRST TRIMESTER
fetus in third monthThis is your final week in the first trimester and your little weed continues to grow and grow and grow. Of the three trimesters, this one has been the most important for your little one’s development. Assuming you’ve carefully adopted a healthy diet, continue to exercise and get ample rest, your little one is set up perfectly for even more growth and development in tri-two! Way to go! He or she now weighs about 2.5 ounces and is roughly 3.5 inches in length. Little hairs, known as lanugo, will start to cover their body this week, as their sense of taste and smell are further refined. Their cozy little amniotic sac is also increasing in size and mass as it continues to fill with more fluid.


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