Gases
What gas enters the body during inhalation?
oxygen
Where are the nostrils located?
In the nose
Air goes in and out of the _____ when we inhale and exhale.
lungs
The nostrils heat, moisten and filter the air for us. What does heat mean?
To warm up, to make hotter
What gas is expelled during exhalation?
carbon dioxide
What do the nostrils do in the respiratory system?
Heat, moisten and filter the air
The diaphragm is a muscle under the lungs. Why does it contract and relax?
To let us breath in and out
What does moisten mean?
to make wet
What gas do you need for energy?
oxygen
Where does the air travel after the nostrils?
To the pharynx
Where does gas exchange occur?
In the pulmonary alveoli
In gas exchange, oxygen enters the blood while carbon dioxide leaves. What does exchange mean?
to change one thing for another, swap, give one thing and receive another
What gas is a product of the nutrition process?
Carbon dioxide
What is the part of the body that is found in the larynx, and produces the sound for our voices?
the vocal cords
What is the function of the trachea/windpipe?
It carries air to the lungs via the bronchi
What is pulmonary ventilation?
The process of air entering and exiting the lungs.
Describe the process of gas exchange.
Oxygen passes into the blood, and carbon dioxide from the blood passes into the lungs, and is released from the body.
Name two of the three parts of the body the pharynx connects.
The larynx, the oesophagus, and the trachea
What are the small tubes that carry air from the bronchi to the lungs?
bronchioles
What does breathing mean? What are the two stages of breathing?
Inhaling/exhaling air from the lungs