ATI RN
Questions on Respiratory System Questions
Question 1 of 5
What structure divides into the right and left primary bronchi?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
Which part of the respiratory system is responsible for the actual exchange of gases between blood and atmospheric air?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
What is the volume of air that will remain in the lungs after a normal expiration called?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
What is the primary factor that affects the binding of oxygen (O₂) to hemoglobin?
Correct Answer: A
Rationale: The binding of oxygen (O₂) to hemoglobin is primarily influenced by the partial pressure of oxygen (pO₂). When the pO₂ is high, such as in the alveoli of the lungs, the affinity of hemoglobin for oxygen increases, promoting the formation of oxyhemoglobin. In contrast, at low pO₂ levels in the tissues, oxyhemoglobin dissociates, releasing oxygen for cellular respiration.
Question 5 of 5
Where does the formation of bicarbonate (HCO₃⁻) from CO₂ primarily occur in the body?
Correct Answer: A
Rationale: The formation of bicarbonate ions (HCO₃⁻) from carbon dioxide (CO₂) primarily occurs in the tissues. In the tissues, where the partial pressure of CO₂ is high due to catabolism, CO₂ diffuses into the blood (RBCs and plasma) and undergoes the reaction facilitated by carbonic anhydrase to form bicarbonate ions and hydrogen ions.