Question

what happened to the ribs and diaphragm during exhalation?​

Answer 1

Answer:

When you breathe out, or exhale, your diaphragm and rib muscles relax,reducing the space in the chest cavity. As the chest cavity gets smaller, your lungs deflate, similar to the releasing of air from a balloon.

Answer 2

During exhalation our ribs contracts and Diaphragm relaxes i.e comes to its original position.

And, During inhalation our ribs expand and diaphram gets down and expands.