Podcast
Questions and Answers
What is the total lung capacity equal to?
What is the total lung capacity equal to?
- Anatomical dead space + alveolar dead space
- Residual volume only
- Vital capacity only
- Vital capacity + residual volume (correct)
What is the function of the upper respiratory tract and airways?
What is the function of the upper respiratory tract and airways?
- Air conditioning, warming, filtering, and humidifying inspired air (correct)
- Regulating breathing rate
- Producing mucus
- Gas exchange
What is the anatomical dead space?
What is the anatomical dead space?
- The volume of air in the alveoli
- The volume of air that takes part in gas exchange
- The upper respiratory tract and airways as far as the terminal bronchioles (correct)
- The volume of the lungs after expiration
What is the instrument used to measure respiratory volumes and capacities?
What is the instrument used to measure respiratory volumes and capacities?
What type of disease involves increased airway resistance?
What type of disease involves increased airway resistance?
What is the sum of the anatomical and alveolar dead space known as?
What is the sum of the anatomical and alveolar dead space known as?
What is the primary role of the surface tension of pleural fluid?
What is the primary role of the surface tension of pleural fluid?
What happens to the intrapleural pressure during inspiration?
What happens to the intrapleural pressure during inspiration?
What is the relationship between intrapleural pressure and pulmonary pressure?
What is the relationship between intrapleural pressure and pulmonary pressure?
What would happen if the intrapleural pressure became equal to the atmospheric pressure?
What would happen if the intrapleural pressure became equal to the atmospheric pressure?
What is the effect of pneumothorax on the lungs?
What is the effect of pneumothorax on the lungs?
What is the function of the transpulmonary pressure?
What is the function of the transpulmonary pressure?
What is the result of plugged bronchioles?
What is the result of plugged bronchioles?
Why do changes in the intrapleural pressure of one lung not affect the other lung?
Why do changes in the intrapleural pressure of one lung not affect the other lung?
What is the primary direction of oxygen diffusion during internal respiration?
What is the primary direction of oxygen diffusion during internal respiration?
What is the PO2 of the blood in the systemic capillaries before gas exchange occurs?
What is the PO2 of the blood in the systemic capillaries before gas exchange occurs?
What occurs when equilibrium is reached during internal respiration?
What occurs when equilibrium is reached during internal respiration?
What factor affects the exchange of oxygen and carbon dioxide during internal respiration?
What factor affects the exchange of oxygen and carbon dioxide during internal respiration?
What is the direction of carbon dioxide diffusion during internal respiration?
What is the direction of carbon dioxide diffusion during internal respiration?
What is the PO2 of the tissue cells before gas exchange occurs?
What is the PO2 of the tissue cells before gas exchange occurs?
What is pulmonary ventilation?
What is pulmonary ventilation?
According to Boyle's Law, what is the relationship between pressure and volume of a gas?
According to Boyle's Law, what is the relationship between pressure and volume of a gas?
Which factor does NOT affect pulmonary ventilation?
Which factor does NOT affect pulmonary ventilation?
During inspiration, what happens to the pressure inside the lungs?
During inspiration, what happens to the pressure inside the lungs?
What is referred to as intrapulmonary pressure (Ppul)?
What is referred to as intrapulmonary pressure (Ppul)?
Which pressure is always described relative to atmospheric pressure?
Which pressure is always described relative to atmospheric pressure?
What is the term used to describe the pressure within the pleural cavity?
What is the term used to describe the pressure within the pleural cavity?
Why do gas molecules exert less pressure in a larger volume container?
Why do gas molecules exert less pressure in a larger volume container?
What happens to the volume of the thoracic cage during inspiration?
What happens to the volume of the thoracic cage during inspiration?
What is the intrapulmonary pressure compared to atmospheric pressure during inspiration?
What is the intrapulmonary pressure compared to atmospheric pressure during inspiration?
What occurs to the lungs during expiration?
What occurs to the lungs during expiration?
What muscles are involved in forced expiration?
What muscles are involved in forced expiration?
What factor does NOT hinder air passage and pulmonary ventilation?
What factor does NOT hinder air passage and pulmonary ventilation?
What mechanism requires energy during pulmonary ventilation?
What mechanism requires energy during pulmonary ventilation?
What happens to intrapleural pressure during inspiration?
What happens to intrapleural pressure during inspiration?
Which statement best describes the process of forced expiration?
Which statement best describes the process of forced expiration?
