Answer:
Explanation:
It prevents the backflow of blood from the right ventricle into the right atrium.
Answer:
Maybe listening to some calming music or ASMR will help you sleep better. I also recommend turning down the brightness of any of your devices and using the night shift. I hope this helps! maybe drinking some water too. If none of that works I would recommend getting medication such as melatonin if you just absolutely cannot sleep :) do not be afraid to ask your parents for some. If you can't get medicine :,) just keep reaching out or researching.
Explanation:
Answer:
It would be useful if they talked to somebody about the problem or see a therapist.
To change behavior, mood, and emotions.
