Respiratory Worksheet

Name_________Sherese Stewart_______________ Date______

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 body's 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