Podcast
Questions and Answers
What is the total pressure at 33 feet below sea level?
What is the total pressure at 33 feet below sea level?
- 318 mm Hg
- 3800 mm Hg
- 1520 mm Hg (correct)
- 760 mm Hg
Why is the atmospheric pressure greater below sea level?
Why is the atmospheric pressure greater below sea level?
- Because sea water is denser than air (correct)
- Due to the decrease in carbon dioxide levels
- Due to the increase in humidity levels
- Because of the lower density of sea water compared to air
What is the calculated Po2 at 33 feet below sea level?
What is the calculated Po2 at 33 feet below sea level?
- 318 mm Hg (correct)
- 1520 mm Hg
- 800 mm Hg
- 20.9 mm Hg
Which partial pressures are relevant for understanding respiratory gas exchange?
Which partial pressures are relevant for understanding respiratory gas exchange?
Why are the partial pressures of gases within the alveoli different from atmospheric partial pressures?
Why are the partial pressures of gases within the alveoli different from atmospheric partial pressures?
'Variables that Influence Gas Exchange' specifically refers to which aspect mentioned?
'Variables that Influence Gas Exchange' specifically refers to which aspect mentioned?
What is a consequence of emphysema?
What is a consequence of emphysema?
What is the primary cause of most cases of emphysema?
What is the primary cause of most cases of emphysema?
Why can't the tissue in the lung affected by emphysema regenerate?
Why can't the tissue in the lung affected by emphysema regenerate?
What is the recommended treatment approach for an emphysema patient?
What is the recommended treatment approach for an emphysema patient?
What characterizes the alveoli in an emphysemic lung?
What characterizes the alveoli in an emphysemic lung?
What drives the diffusion of oxygen and carbon dioxide during tissue gas exchange?
What drives the diffusion of oxygen and carbon dioxide during tissue gas exchange?
What contributes to the efficiency of gas exchange at the respiratory membrane?
What contributes to the efficiency of gas exchange at the respiratory membrane?
How does the aggregate surface area of the respiratory membrane in a healthy lung compare to a tennis court?
How does the aggregate surface area of the respiratory membrane in a healthy lung compare to a tennis court?
What happens to the relative thickness of the respiratory membrane in pneumonia?
What happens to the relative thickness of the respiratory membrane in pneumonia?
What is the term used to describe the simultaneous regulation of airflow in bronchioles and blood flow in arterioles?
What is the term used to describe the simultaneous regulation of airflow in bronchioles and blood flow in arterioles?
How do bronchioles respond in ventilation-perfusion coupling?
How do bronchioles respond in ventilation-perfusion coupling?
In what ways do physiologic adjustments maximize gas exchange at the alveoli?
In what ways do physiologic adjustments maximize gas exchange at the alveoli?
What happens to blood Po2 as it moves through the systemic capillaries?
What happens to blood Po2 as it moves through the systemic capillaries?
What is the direction of carbon dioxide diffusion during gas exchange in systemic cells?
What is the direction of carbon dioxide diffusion during gas exchange in systemic cells?
What happens to blood Pco2 during tissue gas exchange?
What happens to blood Pco2 during tissue gas exchange?
Why does the partial pressure of each gas in the systemic cells remain relatively constant unless conditions change?
Why does the partial pressure of each gas in the systemic cells remain relatively constant unless conditions change?
What happens to blood Po2 during pulmonary gas exchange?
What happens to blood Po2 during pulmonary gas exchange?
What is the movement of respiratory gases between blood in pulmonary capillaries and the alveoli of the lungs called?
What is the movement of respiratory gases between blood in pulmonary capillaries and the alveoli of the lungs called?
Which chemical principle of gas exchange involves the movement of gases relative to their partial pressure gradient?
Which chemical principle of gas exchange involves the movement of gases relative to their partial pressure gradient?
Gas solubility in the body is influenced by which chemical principle?
Gas solubility in the body is influenced by which chemical principle?
What do the gases in air collectively move down during breathing?
What do the gases in air collectively move down during breathing?
Between blood in systemic capillaries and cells of systemic tissues, the exchange of respiratory gases is known as what type of gas exchange?
Between blood in systemic capillaries and cells of systemic tissues, the exchange of respiratory gases is known as what type of gas exchange?
According to the passage, which of the following principles governs the solubility of gases in the body?
According to the passage, which of the following principles governs the solubility of gases in the body?
What is the primary purpose of the partial pressure gradient mentioned in the passage?
What is the primary purpose of the partial pressure gradient mentioned in the passage?
According to the passage, what is the term used to describe the movement of respiratory gases between blood in pulmonary capillaries and the alveoli of the lungs?
According to the passage, what is the term used to describe the movement of respiratory gases between blood in pulmonary capillaries and the alveoli of the lungs?
What is the primary driver of the movement of gases through the respiratory passageway during breathing, according to the passage?
What is the primary driver of the movement of gases through the respiratory passageway during breathing, according to the passage?
Which of the following is NOT a chemical principle of gas exchange mentioned in the passage?
Which of the following is NOT a chemical principle of gas exchange mentioned in the passage?
According to the passage, what is the term used to describe the movement of respiratory gases between blood in systemic capillaries and cells of systemic tissues?
According to the passage, what is the term used to describe the movement of respiratory gases between blood in systemic capillaries and cells of systemic tissues?
What is the driving force that moves a gas into a liquid?
What is the driving force that moves a gas into a liquid?
What is the relationship between the partial pressure gradient of a gas and its movement between two regions?
What is the relationship between the partial pressure gradient of a gas and its movement between two regions?
How does the text describe the relationship between partial pressure gradients and the exchange of respiratory gases?
How does the text describe the relationship between partial pressure gradients and the exchange of respiratory gases?
According to Henry's law, what two factors determine the solubility of a gas in a liquid?
According to Henry's law, what two factors determine the solubility of a gas in a liquid?
What is the main mechanism by which respiratory gases are exchanged between the blood in pulmonary capillaries and the alveoli?
What is the main mechanism by which respiratory gases are exchanged between the blood in pulmonary capillaries and the alveoli?
How does the text describe the relationship between the partial pressures of gases within the alveoli and the atmospheric partial pressures?
How does the text describe the relationship between the partial pressures of gases within the alveoli and the atmospheric partial pressures?
What determines the partial pressure of a gas in a liquid?
What determines the partial pressure of a gas in a liquid?
Why does a soft drink become 'flat' over time after being opened?
Why does a soft drink become 'flat' over time after being opened?
Which gas has the highest solubility in water?
Which gas has the highest solubility in water?
What determines the solubility coefficient of a gas in a liquid?
What determines the solubility coefficient of a gas in a liquid?
If the partial pressure of a gas in a liquid increases, what happens to the amount of gas that enters the liquid?
If the partial pressure of a gas in a liquid increases, what happens to the amount of gas that enters the liquid?
Which gas has the lowest solubility in water among oxygen, carbon dioxide, and nitrogen?
Which gas has the lowest solubility in water among oxygen, carbon dioxide, and nitrogen?
What accounts for the decrease in blood Po2 from 104 mm Hg in the pulmonary capillaries to 100 mm Hg in the systemic capillaries?
What accounts for the decrease in blood Po2 from 104 mm Hg in the pulmonary capillaries to 100 mm Hg in the systemic capillaries?
Why does the blood Po2 decrease from 100 mm Hg in the systemic capillaries to 40 mm Hg in the systemic tissues?
Why does the blood Po2 decrease from 100 mm Hg in the systemic capillaries to 40 mm Hg in the systemic tissues?
What is the relationship between the Pco2 values in the pulmonary and systemic capillaries?
What is the relationship between the Pco2 values in the pulmonary and systemic capillaries?
What is the primary reason for the decrease in blood Po2 from the pulmonary capillaries to the systemic capillaries?
What is the primary reason for the decrease in blood Po2 from the pulmonary capillaries to the systemic capillaries?
How does the blood Pco2 change as it moves from the pulmonary capillaries to the systemic capillaries?
How does the blood Pco2 change as it moves from the pulmonary capillaries to the systemic capillaries?
What is the main reason for the increase in blood Po2 from 40 to 104 mm Hg during pulmonary gas exchange?
What is the main reason for the increase in blood Po2 from 40 to 104 mm Hg during pulmonary gas exchange?
What is the driving force for the diffusion of oxygen from the alveoli into the blood and carbon dioxide from the blood into the alveoli?
What is the driving force for the diffusion of oxygen from the alveoli into the blood and carbon dioxide from the blood into the alveoli?
What is the partial pressure of oxygen (Po2) in the alveoli and in the blood entering the pulmonary capillaries, respectively?
What is the partial pressure of oxygen (Po2) in the alveoli and in the blood entering the pulmonary capillaries, respectively?
What happens to the partial pressure of a gas in the blood during pulmonary gas exchange?
What happens to the partial pressure of a gas in the blood during pulmonary gas exchange?
What is the primary reason for the difference in partial pressures of gases between the alveoli and the blood in the pulmonary capillaries?
What is the primary reason for the difference in partial pressures of gases between the alveoli and the blood in the pulmonary capillaries?
What is the primary purpose of pulmonary gas exchange?
What is the primary purpose of pulmonary gas exchange?
What happens to the partial pressure of a gas in the systemic cells during tissue gas exchange?
What happens to the partial pressure of a gas in the systemic cells during tissue gas exchange?
