What is the primary function of cartilage in the upper respiratory tract?
The Effects of Exercise on Ventilation

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To produce mucus
To regulate airflow
To keep airways open
To allow flexibility
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can bronchioles regulate their diameter?
They lack cartilage
They have more muscle
They are larger in size
They are closer to the lungs
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What triggers an increase in breathing rate during exercise?
Increased oxygen levels
Decreased heart rate
Decreased body temperature
Increased carbon dioxide levels
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the body respond to high levels of carbon dioxide in the blood?
By constricting blood vessels
By reducing oxygen intake
By increasing ventilation rate and depth
By decreasing heart rate
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the process called when bronchioles widen to increase airflow?
Bronchoconstriction
Bronchodilation
Bronchoreduction
Bronchostimulation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which system is primarily responsible for bronchodilation during exercise?
Peripheral nervous system
Central nervous system
Sympathetic nervous system
Parasympathetic nervous system
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does norepinephrine play in bronchodilation?
It increases mucus production
It constricts blood vessels
It binds to adrenergic receptors to dilate bronchioles
It decreases heart rate
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