Question

please answer all the question written here

Answer 1

1. chest get bigger as diaphragm mov
es upward.
2. chest get smaller as diaphragm moves downward.
3.we are able to blow up a balloon as we blow air into it by mouth.
4. we breath faster in exercise as oxygen requirement is increased

Answer 2

1. Bigger....it enlarges becoz of the diaphragm gets relaxed which is present above the abdomen
2.Smaller...the diaphragm gets contracted...
3.By blowing in air through our mouth...
4.The body metabolism boosts up...n the respiration is required more...