The Lungs And Gas Exchange

Question 1

What happens to the ribs, diaphragm, lungs, lung volume and lung pressure when we breathe in?

Answer 1

The ribs move upwards and outwards, the diaphragm contracts and flattens, the lungs expand, the lung volume increases, and the lung pressure decreases below zero

Question 2

What happens to the ribs, diaphragm, lungs, lung volume and lung pressure when we breathe out?

Answer 2

The ribs move back down and in, the diaphragm relaxes, the lungs reduce in size, the long volume decreases, and the lung pressure increases