Podcast
Questions and Answers
What is the main factor that influences the major factor of hemoglobin saturation?
What is the main factor that influences the major factor of hemoglobin saturation?
- BPG (2,3-Bisphosphoglycerate)
- Temperature (correct)
- PCO2
- Blood pH
Which form does carbon dioxide primarily take for transport in blood?
Which form does carbon dioxide primarily take for transport in blood?
- Dissolved in plasma as PCO2
- As bicarbonate ions in plasma (correct)
- As carbonic acid
- Chemically bound to hemoglobin
Why is tissue PO2 always lower than in arterial blood PO2?
Why is tissue PO2 always lower than in arterial blood PO2?
- Blood pH is lower in tissues
- CO2 moves from tissues into blood due to a higher PCO2 in tissues
- Oxygen moves from blood to tissues due to the pressure difference (correct)
- Arterial blood has higher levels of carbon monoxide
What is the mechanism by which oxygen is transported in blood?
What is the mechanism by which oxygen is transported in blood?
What is a classification of hypoxia where cells are unable to use oxygen due to metabolic poisons like cyanide?
What is a classification of hypoxia where cells are unable to use oxygen due to metabolic poisons like cyanide?
What change in shape of hemoglobin facilitates the loading and unloading of oxygen?
What change in shape of hemoglobin facilitates the loading and unloading of oxygen?
Which part of the brain contains rhythm generators that drive respiration?
Which part of the brain contains rhythm generators that drive respiration?
What is the function of the Ventral Respiratory Group (VRG) in the brainstem?
What is the function of the Ventral Respiratory Group (VRG) in the brainstem?
Which group of neurons in the Ventral Respiratory Group (VRG) drives respiration?
Which group of neurons in the Ventral Respiratory Group (VRG) drives respiration?
Why does CO2 diffuse more rapidly out of the cells compared to O2?
Why does CO2 diffuse more rapidly out of the cells compared to O2?
What role does the Dorsal Respiratory Group (DRG) play in respiration?
What role does the Dorsal Respiratory Group (DRG) play in respiration?
Which muscle group is primarily responsible for quiet expiration?
Which muscle group is primarily responsible for quiet expiration?
What is the main factor that influences airway resistance in pulmonary ventilation?
What is the main factor that influences airway resistance in pulmonary ventilation?
What is the function of surfactant in the lungs?
What is the function of surfactant in the lungs?
Which condition results in higher lung compliance?
Which condition results in higher lung compliance?
What drives flow of oxygen into the blood during external respiration?
What drives flow of oxygen into the blood during external respiration?
In which scenario would bronchioles dilate to direct more air?
In which scenario would bronchioles dilate to direct more air?
What is the most potent and tightly controlled factor that influences the medullary respiratory centers?
What is the most potent and tightly controlled factor that influences the medullary respiratory centers?
Which chemoreceptors mediate 30% of the CO2 response in influencing breathing?
Which chemoreceptors mediate 30% of the CO2 response in influencing breathing?
What is the primary cause of acute mountain sickness (AMS)?
What is the primary cause of acute mountain sickness (AMS)?
Which lung disease is characterized by a permanent enlargement of alveoli and destruction of alveolar walls?
Which lung disease is characterized by a permanent enlargement of alveoli and destruction of alveolar walls?
What immune response mechanism causes airway inflammation in tuberculosis?
What immune response mechanism causes airway inflammation in tuberculosis?
