In the adult's impression, newborns do nothing and do nothing. Don't underestimate such a baby, the baby's ability to survive is innately brought about. Although the body is a little smaller, it also strives to communicate with the parents in many ways, hoping to get better care.
Six physical functions of newborns, reference for new parents: 1-3 weeks of physical development
Functions of newborns
1. Original reflection
A baby who has just been born for a hundred days will make some movements, which has nothing to do with brain command, as if you direct yours and I mine. This is a primitive reflex action. When you hear a loud noise, you will open your hands naturally, your lips will naturally suck when you touch something, and you will catch the fingers of adults, which is also an unconscious action.
2. Vision
Newborns have vision around 0.01-0.05 and the focus of vision is about a foot from the eye. Newborns are more sensitive to changes in light and shade, so don't turn on the lights when your baby sleeps.
3. Hearing
The fetus is about 25 weeks old and already has the ability to hear. After the baby is born, there is a loud sound, and the baby will cry in fright. Parents can speak to their baby in a soft voice or sing to the basket area to reassure them.
4. Body
Soon after the baby is born, there will be some physiological factors that decrease in the baby's weight. The head is 25% of the body, and the baby's neck still can't support the entire head. For a long time, your baby's limbs are bent. Even if you hold it up, it will not change much, and parents need to be careful.
5. Breathe
Newborns breathe and pulse twice as much as adults, due to the fact that their rapid growth and development require more oxygen and nutrients. Its breathing rate is about 40-50 beats per minute, and the pulse is 120 beats per minute. Newborns with chest muscles are not well developed. KeXin Parenting said that for a long time, abdominal breathing is required, that is, breathing frequently through the diaphragm up and down.
6. Body temperature
The temperature of amniotic fluid is about 37 ° C, in a constant temperature state, which plays a protective role for the fetus, and the baby needs to adjust the temperature to adapt to the outside world. The ability to regulate the body temperature after the baby is born for 100 days is still very poor, the surrounding environment will affect the baby's body temperature, parents must pay attention to observe the baby's state, the indoor temperature and clothing are properly adjusted in order to stabilize the baby's body temperature.
Physical development of newborns at 1-3 weeks
1. Physical development of newborns in the first week
1. Head circumference
The head circumference of the baby boy is 31.9-36.7 cm, and the head circumference of the baby girl is 31.5-36.3 cm.
2. Bust
The bust circumference of the baby boy is 29.7-35.7 cm, and the head circumference of the baby girl is 29.8-35.4 cm.
3. Weight
Baby boys weigh 2.5-4.1 kg and baby girls weigh 2.4-4 kg.
4. Height
The baby boy is 47-53 .8cm tall and the baby girl weighs 46.6-53 cm.
2. The physical development of newborns in the second week
1. Head circumference
The head circumference of the baby boy is 35.5-40.7 cm, and the head circumference of the baby girl is 35-39 .8cm.
2. Bust
The bust circumference of baby boys is 34-41.2 cm, and the bust of baby girls is 33.5-40.3 cm.
3. Weight
Baby boys weigh 3.9-4.3 kg and baby girls 3.6-4 kg.
4. Height
The height of the baby boy is 52.3-61.5 cm, and the height of the baby girl is 51.7-60.5 cm.
3. Physical development of newborns in the 3rd week
1. Head circumference
The head circumference of the baby boy is 37.5-42.7 cm, and the head circumference of the baby girl is 37-41 .8cm.
2. Bust
The bust circumference of baby boys is 36-43.2 cm, and the bust of baby girls is 35.5-42.3 cm.
3. Weight
Baby boys weigh 4.2-4.6 kg and baby girls 3.9-4.3 kg.
4. Height
The height of the baby boy is 54.3-63.5 cm, and the height of the baby girl is 53.7-62.5 cm.
What stage is your baby at? Share it and communicate with Your Mom.
【Transferred from: Sohu Original - Fashion East Stream】