How our lungs work

How our lungs work ye.

Breathing is very important to keep us alive. Everyday we breathe  about 20k

times a day without thinking about it. our lungs work everyday day, becoming

bigger to get oxygen in from the air decreasing its size and number or range to

release some carbon dioxide.

When you breathe in you suck the oxygen from the atmosphere. Inside your lungs

there is a thing like a sponge with millions of air spaces called alveoli. Inside of the

alveoli, oxygen is sucked and goes all over the body. Inside the holes of the lungs

there is a gigantic surface area. Which lets a giant amount of oxygen to be

sucked. 

If you breathe out you take out the bad carbon dioxide that you don't need. The

bad carbon dioxide is a waste product. It's created when energy is making a

process that happens inside us. The process of exchanging carbon dioxide is for

oxygen in our body’s cells which is called respiration.

If you hold your breath, the carbon dioxide in your blood will increase. We have

enough oxygen in our body to keep our body’s alive. But the build-up of carbon

dioxide will cause a signal in our body forcing us to breathe before the oxygen

disappears.

Our lungs are made out of millions of alveoli. Which sucks the oxygen from the air,

letting it to be transported around our body. Carbon dioxide is a useless product

that builds up in our body then causes us to breathe, releasing the carbon dioxide.