3/9/11

Pregnancy week fetal development

13 weeks \' gestation fetal face looks more like an adult, about in length 76 mm, weight ratio increased slightly last week. His (her) eyes at the head of the more prominent forehead, the gap between the two eyes, and started to make bile in the liver, kidneys start to the secretion of urine the bladder.


If you gently with her hands in abdominal touching, the fetus will creep up, but you still feel the movements of the fetus. Rapidly increasing fetal neurons, neural synaptic formation, conditioning capacity-strengthening of the fetus, fingers start to hand clenched, toes and soles can be bent, still tightly closed eyelids.


14 weeks \' gestation the fetus is 76-100 mm and weighs 28 g. In his (her) fingers unique fingerprint has already occurred. If the fetus is a girl, now has about 2 million eggs in her ovaries, only 1 million when he was born, when she grows up, will be less and less, to 17 years old may only 20duowange.


15 weeks \' gestation fetal growth is very fast, far more than a few weeks before, he (she) has reached the 10-12 cm in length, weight reached 50 grams. Now on the fetus of a thin skin covering a thin layer of fluff, body looks like wearing a thin carpet, this layer of fluff usually at birth will disappear. Fetal eyebrows started to grow now, rapidly also in the top of the hair growth, hair texture, density, and color will be changed after they are born. Fetus in the womb make many actions, he (she) which clenched fists, with narrow eyes squint, frown, make faces, are starting to suck their thumbs. Researchers believe that these actions will promote the growth of the fetal brain.


16 weeks \' gestation the fetus begins hiccups, this is fetal breathing threatened. Now you don\'t hear any sound, because the trachea of the fetus is not air, but the flow of liquid. Your weight may have increased 2000-4500 grams, and fetal body weight of only 150 grams, more than 12 cm in length. Now, fetal legs longer than arms, fingernail completely formed, finger joint movement.


Now fetal reproductive organs have been formed, with b-mode ultrasound can distinguish sex, but in general each accounted for half of boys and girls, boys are slightly more. Under normal circumstances, the domestic gender check, only for judging certain diseases through genetic testing.


17 weeks gestation fetus looks like a PEAR, there are about 13 cm long and weighing 170 grams.


In the womb fetuses and babies after birth as lovely, fetus becomes very naughty now, he is particularly fond of using hand or grasp the umbilical cord, sometimes he special tight grasping so tightly that there can be only a small amount of oxygen transport. But don\'t worry, fetus will not do too much, he knows to protect themselves from injury. Circulatory system and urinary tract now fully into normal working state, fetal lung also began to work, he has been able to continue to inhale and exhale amniotic fluid.


Fetal movement is now very active, sometimes you will feel a slight tenderness on the abdominal side, that\'s because the uterus increases rapidly, ligaments on either side of the uterus and pelvis in the growth and changes to adapt to the growth of the fetus, these feelings are normal, but if continued for a few days has been pain, please seek medical consultation.


18 weeks \' gestation the fetus of close to 14 cm in length and weighing about 200 grams, almost all of the bones are similar to rubber-like cartilage, will become increasingly hard, a substance can protect bones \"myelin\" begins slowly to wrap on the spinal cord.


19 weeks gestation the fetus is about 15 cm long, he (she) chest bag from time to time, and depression, which is the manifestation of respiratory, mouth but in fetal amniotic fluid instead of air flow is.


Well into the middle period of pregnancy, you need to do a b-, usually between weeks 18-22, this is to view fetal growth and development of the situation, determine whether there is a birth defect, and check the placenta and umbilical cord. While doing b-check, you can see on the screen of the instrument of fetuses are kicking legs, flexor, straighten oneself up, scrolling and sucking his thumb.


Now you should adhere to the regular number of fetal movement, time best fixed 8-9 point on the evening of the day, FM general average 3-5 per hour. Adhere to the few FM every day, is an antenatal instruction directly, when you are on fetal great attention, can imagine all kinds of body of the fetus, fetus will also respond to how you feel, this would enhance the emotional exchanges between the mother and child.


Fetal most likes to listen to the sound of low frequency adjustment, Dad\'s voice is just right, if you can stand every day with their husbands and intrauterine fetal speech, to arouse the enthusiasm of the fetus, helping fetal intellectual development.


20 weeks \' gestation begins end of Palace about elevated l cm per week. Fetal body height in 14-16.5 cm, weight about 250 grams. Fetal now can swallow amniotic fluid and kidney has been able to make the urine, hair also grew rapidly.


Development of sensory organs by region quickly, neurons are divided into various different senses, taste, smell, hearing, sight and touch are from now on, in the specialized area of the brain development, Neuron growth began to slow down, but mutual interchange between the neurons begin to increase.


Now you can feel the fetus kept moving. Do some rolling action. Sometimes he (she) movement was too violent, you could not sleep at night. In the next 10 weeks of fetal movement will very frequently, till late pregnancy justify your uterus.


21 weeks \' gestation, and his weight is growing. This little guy look now becomes slippery, his body covered with a layer of white, clear material, which is small for fat. It can protect the skin of the fetus, so as not to suffer under the long soak in the amniotic fluid. Many baby who is still with them when they are born white tires of fat.


  

22 weeks of gestation when fetal body weight of about 350 grams, has 19 cm in length. Eyebrows and eyelids have legible of the fetus, 10 has been long out of the tender on the small finger nails.

23 weeks gestation fetus already look like a tiny baby, his about 20 cm in length and weighed approximately 450 g. Since the subcutaneous fat is still, at this time of fetal skin is red, red, and wrinkled, looks like a little old man. Skin crease is for growth of subcutaneous fat of room.


His lips, eyebrows and eyelashes are in position, visible retina has also been formed, with weak vision. Fetal and hormone secretion of the pancreas is also stable during the development.


At this point in the baby\'s gums following, also began development of permanent teeth tooth germ, it was you didn\'t think of it? To do this you have to add some more calcium, lay the foundations for babies to grow a good teeth.


At 24 weeks \' gestation the fetus has been about more than 500 grams, his hearing has been formed, he can hear you speak some deformation of the sound, the sound of your heart and your bowel the sound very empty. Some amount of noise the fetus can hear, such as vacuum cleaner sound of, was a great stereo sound, next door decoration drill sound, the sound will make fetal restless.

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