Fetus begins rhythmic breathing movements.
- By about week 28 of pregnancy, the lungs have developed enough that premature babies can breathe on their own.
- Although the lungs and circulatory system still need some more time to mature.
What happen in Third trimester?
- The fetus can see and hear.
- The brain continues to develop.
- The kidneys and lungs continue to mature.
- By the 36th week, the head may “engage” (drop into the pelvic area), a process called lightening.
- The bones of the skull remain soft to make it easier to pass through the birth canal.
- For many babies, the irises of the eyes are slate blue. The permanent eye color will not appear until several days or weeks after birth.
- The fetus can suck its thumb and has the ability to cry.
- The head will usually turn downward during the last couple of weeks of pregnancy.
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