16 Questions
What is the main factor that affects breathing rate?
CO2 concentration in the blood
What stimulates chemoreceptors to increase breathing?
A large drop in O2 levels
What is hypernea?
Increased rate and depth of breathing
Which type of blood has hemoglobin with a greater affinity for oxygen?
Fetal blood
At what altitude does altitude sickness typically start?
8000 feet
When does the development of respiratory bronchioles begin during embryonic development?
Week 4
What is the main function of the nose in the respiratory system?
To warm and humidify incoming air
What is the function of cilia in the nose?
To push mucus and debris towards the throat
Which structure closes off the trachea while swallowing to ensure food goes to the esophagus?
Epiglottis
Where does gas exchange directly occur in the respiratory system?
Respiratory bronchioles and alveoli
What is the primary function of alveolar macrophages in the lungs?
Protection against pathogens
Which of the following describes the transpulmonary pressure?
Difference between intrapleural pressure and intra-alveolar pressure
What causes inspiration during pulmonary ventilation?
Contractions of diaphragm and intercostal muscles
Which term refers to a sequence of inspiration and expiration?
Respiratory cycle
'Tidal volume' is best described as:
Amount of air entering lungs during normal breathing
What does 'total lung capacity' refer to?
Amount of air possible after a forceful inhalation
Learn about the role of the nose in conducting zone route for air, removing debris and pathogens, and warming and humidifying incoming air. Explore how cilia in the nose function to push mucus and debris towards the throat.
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