Respiratory System Structure Quiz

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

Control the acid-base balance

Assist with the sense of smell

Provide oxygen for cellular respiration

Remove debris and warm incoming air (correct)

What is the function of the para nasal sinuses in the respiratory system?

Lighten the skull and warm/humidify air (correct)

Remove debris and warm incoming air

Produce mucus to trap debris

Regulate the volume of air that enters the lungs

What is the role of cilia in the nasal cavity of the respiratory system?

Clean and warm incoming air

Send particles down the throat

Fight infections with defensins

Trap debris with mucus (correct)

In what area does the separation of the right and left nostrils occur in the respiratory system?

Septum Signup and view all the answers

What is the function of the larynx in regulating airflow within the respiratory system?

Regulate the volume of air that enters the lungs Signup and view all the answers

What structure closes the trachea during swallowing food in the respiratory system?

Epiglottis Signup and view all the answers

What is the cause of alkaline pH in the blood during hyperventilation?

Excess oxygen in the blood Signup and view all the answers

At what altitude will hemoglobin saturation be only about 67%?

19,000 feet Signup and view all the answers

What happens to oxygen saturation during exercise at sea level?

Less oxygen gets released into the tissues than at rest Signup and view all the answers

How do we treat Acute Mountain Sickness (AMS) according to the text?

By descending to a lower altitude Signup and view all the answers

When does fetal breathing movement begin according to the text?

Week 20 Signup and view all the answers

What is an indication that the fetus is in good health based on the text?

Inhaling and exhaling fluid Signup and view all the answers

What is the function of alveolar macrophages in the lungs?

To clean debris and kill pathogens Signup and view all the answers

In which lung is the cardiac notch located?

Left lung Signup and view all the answers

What is the primary function of the pulmonary artery?

To carry deoxygenated blood to the lungs Signup and view all the answers

Which of the following nerves is responsible for bronchoconstriction?

Parasympathetic nerves Signup and view all the answers

What is the name of the area where respiration takes place in the lungs?

Alveolar sac Signup and view all the answers

What is the role of intrapleural pressure in keeping the lungs inflated?

Remains about -4mm Hg below atmospheric pressure Signup and view all the answers

Which factor influences ventilation due to the size of the lungs and air passage diameter?

Resistance Signup and view all the answers

What is the primary function of alveoli in the respiratory system?

Gas exchange Signup and view all the answers

Which component lubricates the lungs and holds them against the thoracic wall?

Pleural fluid Signup and view all the answers

What controls respiratory rate and adjusts for oxygen, carbon dioxide, and pH levels?

Medulla oblongata Signup and view all the answers

Which part of the brain sends signals to the diaphragm and intercostal muscles for breathing?

Dorsal respiratory group Signup and view all the answers

What stimulates the dorsal respiratory group (DRG) in the brainstem?

Apneustic center Signup and view all the answers

How does an increase in carbon dioxide affect breathing?

Increases breathing rate Signup and view all the answers

Which gas has the highest solubility in liquid based on Henry’s Law?

Carbon dioxide Signup and view all the answers

What percentage of oxygen binds to hemoglobin in a normal adult?

90% - 95% Signup and view all the answers

What is the main form of carbon dioxide transport in the blood?

As bicarbonate Signup and view all the answers

What causes bronchodilation in the alveoli?

High pressure of carbon dioxide Signup and view all the answers

What happens to hemoglobin saturation levels if pH decreases?

Decreases Signup and view all the answers

What causes hyperpnea?

Increased rate and depth of ventilation demands for oxygen Signup and view all the answers

Where does external respiration occur?

In the alveoli Signup and view all the answers