3 years ago

When during fetal development do rhythmic breathing movements begin?

Biology

2 answers:

zaharov [31]3 years ago

4 0

in the third trimester

gogolik [260]3 years ago

3 0

It should be when A. late in the third trimester, specifically months 7 and 8. It can't be B or D because the baby is breathing and getting oxygen through the placenta. It's not C because the lungs will de fully developed by the time the baby is out. In the 3rd trimester "the lungs are still developing still shortly before birth, but rhythmic breathing movements begin before lungs are fully developed." Its in my notes. I hope this helps!

You might be interested in

Someone help me match the last two with their definition? <br> Diffusion and facilitated diffusion

Ber [7]

Answer:

Explanation:

3. diffusion

4. facilitated diffusion

6 0

3 years ago

The issue of whether human activities cause global climate change is a controversial topic. Which limitation to climate research

kompoz [17]

B
The other problems are not as easily solved; whereas, data collection over long periods of time is possible and was already done in the past, eg temperature and weather patterns. Therefore, this is the easiest limitation to overcome.

6 0

4 years ago

Read 2 more answers

Shivering warms the body by causing involuntary muscle contractions, which two body systems are working together to help you mai

Elodia [21]

Circulatory and muscle system

4 0

3 years ago

Toxic pesticides, smoke, and other emissions into the air can change the local weather patterns.

Lorico [155]

Very true.
It harms our atmosphere, thus effecting climate. Which can kill and sometimes nearly cause organisms to go extinct. It corrupts our air, which is very unhealthy, and can cause lung cancer, and harm our breathing patterns. Which can shorten life expectancy.

Stay clean, and I hope this helps! :) <span />

6 0

3 years ago

Among human population,most fresh water is used for

Arisa [49]

Personal consumption

5 0

4 years ago