Development of the fetus, third trimester

With the third trimester the final stretch of pregnancy begins and there is less time for the mother to meet her baby face to face. Over the next several weeks, some of the last parts of the baby will finish forming:

• In the week 27 it already weighs around 1000 g. The third trimester begins.
• In the week 28 you already have toenails and Open and close your eyes. It begins to accumulate subcutaneous fat that smooths the wrinkles of the skin.
• At 29 weeks Its approximate weight is 1350g. His appearance begins to be that of a newborn child.
• At 30 weeks the lanugo begins to disappear and the production of red blood cells passes from the spleen to the bone marrow. His growth begins to slowor.
• In the week 31 respiratory movements are more harmonious. The movements in the abdomen begin to be more limited by the lack of space.
• At 32 weeks weighs about 1900g. In male fetuses, the testes already begin to enter the scrotum. The upper and lower extremities begin to look plump.
• At 33 weeks they begin to position themselves upside down. You can notice hiccups of the fetus, something normal and frequent.
• At 34 weeks its weight is about 2300g. The movements diminish due to the decrease of space in the uterus but those of the extremities are still noticeable.
• At 35 weeks the lung maturation. If some fetuses are born, they no longer need an incubator. It is now in place to go out.
• At 36 weeks weighs about 2800g. He continues to mature neurologically and they are still considered premature fetuses. They turn their heads in search of the light. Increase body fat. The nails reach the tips of the fingers.
• At 37 weeks it is already a full-term fetus. The lanugo it disappears all over the body except the upper arms and shoulders. The nails already extend beyond the fingers. The compression of the hand is firm.
• At 38 weeks weighs approximately 3200g. The circumference of the abdomen is equal to that of the head and later this proportion will be reversed.
• At 39 weeks it is already fully mature inside the womb. 32% of their time is spent in deep sleep, 13% in active sleep, 53% in active wakefulness and 2% in restful wakefulness.
• At 40 weeks It weighs an average of 3500g and its size is 50 cm. It is usually the last week of pregnancy.