Respiratory System Flashcards
1
Q
Which structure of the respiratory system is adapted for gas exchange?
A
Alveoli
2
Q
The trachea, bronci and bronchioles are composed of which material?
A
Cartilage
3
Q
What are the 4 adaptations that make the alveoli suited to gas exchange?
A
1.One cell thick 2. Good blood supply 3. Large surface area 4. Moisture
4
Q
An increase in which chemical would increase breathing rate?
A
CO2
5
Q
Which receptors detect an increase in chemicals such as CO2?
A
chemoreceptors
6
Q
Which muscles contract during inhalation?
A
Diaphragm and intercostal
7
Q
Why does the chest cavity expand during inhalation?
A
To decrease air pressure in lungs
8
Q
Which disorder of the respiratory system is treated with the use of an inhaler?
A
Asthma
9
Q
Which substance lines the respiratory tract to protect it from infection?
A
Mucus
