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solmaris [256]
4 years ago
9

Im what trimester does the respiratory system mature

Health
2 answers:
seropon [69]4 years ago
7 0
The respiratory system matures in the third trimester.

In the 8th week the lungs will start to form.

In the 26th week <span>Air sacs form in baby's lungs, but lungs are still not ready to work outside the womb.

In weeks 27-30 </span><span>The respiratory system, while immature, produces surfactant. This substance helps the air sacs fill with air.

in weeks 31-34 </span><span>Rhythmic breathing occurs, but baby's lungs are not fully mature.


</span>In the third trimester, <span>Some fetal systems, such as the respiratory system, only now begin to mature just prior to birth.</span>

Physicians can test the infants lung maturity prior to birth if the mother going into labor.
Genrish500 [490]4 years ago
6 0
The second trimester is when the respiratory system is mature. 
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