Baby needs to go through multiple stages in the mother's belly to take shape. Every day after the child is born, we can see many amazing changes that the baby has. But in fact, many magical things have already happened before the baby was born. For example, they may react to certain foods and even smile or frown because of it. Next, we will introduce 7 little-known knowledge that happens in unborn babies.
1. They grow hair in the uterus
Many people know that after a child is born, they not only have hair, but also have hair on their bodies. This is actually the fetal hair that the baby starts to grow in the belly of the mother. These hairs cover not only the head and body, but also the face. Of course, most fetal hair disappears before the child is born. This situation also exists in other mammals in nature. For example, elephants, whales, and seals, but they tend to retain these fetal hairs after birth.
2. They respond to different foods
According to research, when babies are in their mother's belly for 32 to 36 weeks, they will respond to some foods. For example, kale is the plant. The test babies in the study didn't seem to like this food. When mothers take it, they would lift their upper lip and press their lips to make a crying expression. However, when the mother ingested carrots, the baby reacted the opposite, and they began to pull up the corners of their mouths and made smiling movements. Scientists believe this may be because carrots are sweeter and have higher sugar content.
3, they can yawn, cry and urinate
Although the baby is not born yet, they can already do many things. For example, yawning, crying and editor. The yawning and crying movements were observed by scientists at 24 weeks, but at 36 weeks, the yawning movements seemed to disappear, and from 9 to 16 weeks, they would already urinate in the uterus.
4. They have more bones at birth than adults 50%
Although babies are still very small after birth, they have more bones than adults. A newborn baby has 300 bones. As it continues to develop and grow, many of the bones will merge together to reach 206.
5. Loud noise will have a negative impact on their hearing
The fetus' ears begin to develop around 18 weeks after fertilization, which means they can already hear some sounds. By 6 months, I could even turn around for the sound I heard. Therefore, pregnant mothers should pay attention to the occasions they are staying, because noise will have a negative impact on them, which will affect the development of their ears.
6. Their hearts start to beat at 5 weeks, and they are very fast
Heart beating is evidence of life, and babies have begun to develop and beat at 5 to 6 weeks in their mother's belly, although they are so small that they may not be as big as a needle. Of course, it takes about 10 weeks to fully form the heart, and its beating frequency is quite high, reaching 110 to 160 times per minute.
7. When the fetus begins to have taste buds
In fact, when the baby is 8 weeks old in the mother's belly, taste buds have begun to form, that is, they can taste the taste through the foods that the mother consumes. This may affect the mother's eating habits.
