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Respiratory System: Nose Anatomy and Function

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Respiratory System: Nose Anatomy and Function

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Questions and Answers

What is the primary factor that affects breathing rate by increasing H+ and decreasing pH?

Elevated CO2 concentration in the blood (correct)

High O2 levels in the blood

Low CO2 levels in the blood

Lactate in the muscles

Why does strenuous exercise increase breathing rate according to the text?

To increase the amount of O2 in the blood

To promote muscle relaxation

To eliminate excess CO2 and H+ from the body (correct)

To decrease the concentration of H+ in the muscles

What is the main stimulus needed to increase breathing by stimulating chemoreceptors?

Increase in O2 levels

Decrease in CO2 levels

Increase in CO2 levels

Drop in O2 levels (correct)

Which gas has a greater solubility compared to O2?

CO2 Signup and view all the answers

What causes a decrease in blood pH that promotes O2 dissociation from hemoglobin?

Lowered pH due to certain cell metabolism byproducts Signup and view all the answers

At high altitudes, what physiological response helps maintain oxygen transport efficiency despite low saturation?

Increased EPO release for more RBCs production Signup and view all the answers

What is the main function of the conducting zone in the respiratory system?

Warm and humidify incoming air Signup and view all the answers

Which structure in the respiratory system is responsible for closing off the windpipe during swallowing?

Epiglottis Signup and view all the answers

What is the function of cilia in the nose?

Beat to push mucus and debris towards the throat Signup and view all the answers

What happens to cilia in the nose when exposed to cold air?

They slow down Signup and view all the answers

Where does gas exchange directly occur in the respiratory system?

Respiratory bronchioles Signup and view all the answers

Which structure in the respiratory system has larger folds that produce a deeper voice?

Vocal cords Signup and view all the answers

What is the primary role of alveolar macrophages in the lungs?

Protect against foreign particles and pathogens Signup and view all the answers