RESPIRATORY PHYSIOLOGY EXAM
WITH CORRECT QUESTIONS AND
ANSWERS 2026
Which correctly describes the cause of the increase in alveolar ventilation that occurs when a
person ascends to high altitude? - CORRECT-ANSWERS ****The decrease in PO2 of inspired
air decreases alveolar and arterial PO2, stimulating the
peripheral chemoreceptors.
Which is characteristic of a person chronically suffering from hypoxic hypoxia? - CORRECT-
ANSWERS ****higher-than-normal hematocrit.
Which of the following conditions would result in a systemic arterial PO2 lower than is typical of
a healthy person at sea level? - CORRECT-ANSWERS ****traveling to high altitude.
Which of the following statements regarding hypoxia is correct? - CORRECT-ANSWERS
****Exposure to high altitude is a form of hypoxic hypoxia.
, Following strenuous exercise, blood levels of lactic acid are ________ compared to pre-
exercise levels. This change in acid concentration causes a reflex ________ in ventilation by
activating ________. - CORRECT-ANSWERS ****increased; increase; peripheral
chemoreceptors
Which of these does NOT increase during heavy exercise? - CORRECT-ANSWERS ****arterial
PCO2
If the nerves from the carotid and aortic bodies are cut, which of these would occur? -
CORRECT-ANSWERS ****A decrease in arterial PO2 will no longer increase ventilation.
Which of these would tend to increase ventilation? - CORRECT-ANSWERS ****breathing air
with increased PCO2
Which of the following statements regarding control of respiration is correct? - CORRECT-
ANSWERS ****Increased concentrations of lactic acid stimulate ventilation primarily by acting
on peripheral chemoreceptors
WITH CORRECT QUESTIONS AND
ANSWERS 2026
Which correctly describes the cause of the increase in alveolar ventilation that occurs when a
person ascends to high altitude? - CORRECT-ANSWERS ****The decrease in PO2 of inspired
air decreases alveolar and arterial PO2, stimulating the
peripheral chemoreceptors.
Which is characteristic of a person chronically suffering from hypoxic hypoxia? - CORRECT-
ANSWERS ****higher-than-normal hematocrit.
Which of the following conditions would result in a systemic arterial PO2 lower than is typical of
a healthy person at sea level? - CORRECT-ANSWERS ****traveling to high altitude.
Which of the following statements regarding hypoxia is correct? - CORRECT-ANSWERS
****Exposure to high altitude is a form of hypoxic hypoxia.
, Following strenuous exercise, blood levels of lactic acid are ________ compared to pre-
exercise levels. This change in acid concentration causes a reflex ________ in ventilation by
activating ________. - CORRECT-ANSWERS ****increased; increase; peripheral
chemoreceptors
Which of these does NOT increase during heavy exercise? - CORRECT-ANSWERS ****arterial
PCO2
If the nerves from the carotid and aortic bodies are cut, which of these would occur? -
CORRECT-ANSWERS ****A decrease in arterial PO2 will no longer increase ventilation.
Which of these would tend to increase ventilation? - CORRECT-ANSWERS ****breathing air
with increased PCO2
Which of the following statements regarding control of respiration is correct? - CORRECT-
ANSWERS ****Increased concentrations of lactic acid stimulate ventilation primarily by acting
on peripheral chemoreceptors
