Question

What happens when we inhale?
The external intercostal muscles contract and the ribcage is pulled upwards and inwards
The external intercostal muscles contract and the ribcage is pulled upwards and outwards
The internal intercostal muscles contract and the ribcage is pulled upwards and outwards
The internal intercostal muscles react and the ribcage is pulled upwards and inwards

Answer 1

Answer:

When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out)