12 Questions
What is the primary goal of respiration?
To provide O2 to the tissues and remove CO2
What is the term for the exchange of gases between the air and blood?
External respiration
What is the term for the region where gas exchange occurs?
Respiratory zone
Which of the following is NOT a function of respiration?
Digestion of nutrients
What is the primary function of the conducting zone structures in the respiratory system?
To warm and humidify the inspired air and filter out particles
What is the term for the anatomical structures through which air passes before reaching the respiratory zone?
Conducting zone
How many major functions of respiration are mentioned in the text?
4
What is the temperature of the inspired air when it reaches the respiratory zone?
37°C (body temperature)
What is the purpose of the mucus secreted by cells of the conducting zone structures?
To trap small particles in the inspired air and filter out impurities
What is the approximate rate at which mucus is moved along the conducting zone by cilia?
1 to 2 centimeters per minute
What is the typical size of particles that are filtered out of the inspired air by the conducting zone structures?
Particles larger than about 6 μm
What are the two ways in which the lungs can be expanded and contracted?
By downward and upward movement of the diaphragm and elevation and depression of the ribs
Learn about the four major functions of respiration, including pulmonary ventilation, diffusion of oxygen and carbon dioxide, and transport of gases in the blood. Test your knowledge of the respiratory system!
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