Breathing processes, exchange of gases, respiration

Our body can store oxygen to use later?

no, we can not store oxygen in our body. For this reason we keep breathing constantly.

Which organ pumps air in and out of our bodies?

lungs

What is the difference between breathing and respiration?

Breathing means inhale air into our lungs and exhale the air out. Respiration is the chemical reaction that takes place in all of your cells reacting glucose with oxygen to release energy.

Why do you heart rate and breathing get faster when you run?

Because my muscles will require more energy, which is produced by respiration. My breathing rate increases so you can take in more oxygen. My heart rate increases so that blood can be pumped to your muscles faster to deliver the extra oxygen and glucose the muscle cells need for respiration.

Imagine you're a oxygen molecule that has been breathed in, describe the route you take to get to the blood.

I will travel down the trachea to my lungs and through smaller and smaller branches until I reach one of the alveoli. Then I will diffuse across the thin walls of the alveoli and surrounding blood vessels, and enter the blood.

If respiration is a reaction, writedown the reactants and products

glucose + O2-----> CO2 + H2O

What happens to carbon dioxide as blood flows around the alveoli?

it diffuses across the thin wall of the blood vessel and into the air.

Explain breathing

it means inhale air into our lungs and exhale the air out.

Why do we need to breath?

because we need oxygen for respiration.

How the oxygen gas moves into the blood in the alveoli?

by diffusion

How do you call the process that the blood swaps carbon dioxide gas for oxygen gas?

gas exchange