Question

what happena to the lugs when breathe in?​

Answer 1

Answer:

When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.

Answer 2

Answer:

When we breathe in our lungs expand, and our diaphragm goes down.

When we breathe in our alveoli gets filled with air, the blood vessels in front of them take oxygen from the air present in alveoli, and give CO2 to the alveoli.