Respiratory Worksheet
Please write your answers in red.
The Basis of Gas Exchange:
1. What percentage of air is made up of oxygen? __21%__ carbon dioxide? __0.03%__
2. Define Respiratory Surface
A thin, moist, epithelial surface that oxygen can cross to move into the body and carbon dioxide can cross to move out of the body
3. Why do respiratory surfaces have to be moist?
Constant airflow without moisture would dry out our tubes and they would crack and bleed
Factors That Influence Gas Exchange
4. Which physical process helps to maintain a steep pressure difference across your respiratory surface?
Human Respiratory System
Human Respiratory System: Functions of the Respiratory System
5. “Ventilation” = __perfusion__ (a more commonly used term)
6. Tiny air sacs making up your lungs are called
alveoli
7. In addition, control over breathing is vital for adjusting the bodys acid-base balance. So, what happens to the amount of carbon dioxide in your blood when someone is breathing fast & deep?
This leads to low levels of carbon dioxide in your blood.
What happens to the pH of their blood? From Airways to the Lungs & Sites of Gas Exchange in the Lungs
8. Place the following terms in the correct order for someone performing exhalation. bronchiole, trachea, bronchus, pharynx, nasal cavity, larynx, alveolus, epiglottis
Alveolus, Bronchiole, Bronchus, Trachea, Larynx, Pharynx, Nasal Cavity, Epiglottis
Read more:
9.What is the name of the muscular partition between the thoracic and abdominal cavity which plays a major role in breathing?
10. What is pleurisy?
Inflammation of the pleurae, which causes pain when breathing.
Breathing: The Respiratory Cycle
11. Which one is an active, energy requiring action? (inhalation or exhalation)
inhalation
12. What two muscles are involved in inhalation?
The diaphragm & the external intercostal muscles
Lung Volumes
13. Which term refers to the most amount of air one can move into their lungs during maximal inhalation? (vital inspiratory capacity or tidal capacity)
vital inspiratory capacity
Gas Exchange