More cards in this set

less oxygen as it has been used in .......

............takes place by diffusion in the alveoli within the lungs. As a result the composition of inhaled and exhaled air is different.

the......... relax, the ribcage drops inwards and downward

the diaphragm contracts, pulling downwards to increase the........ of the chest

After passing into the many bronchioles, it finally arrives into some of the millions of tiny sacs called ......