Cardiology Quiz #18: Baroreceptors and Chemoreceptors

1. A 45-year-old man is brought to the emergency department after being found unconscious. On examination, his blood pressure is 80/50 mmHg, and his heart rate is 120 beats per minute. Which of the following responses is most likely to be activated in this patient to increase blood pressure? 

Question 1 of 5

2. During a physiology lecture, a professor explains the effect of hypoxemia on peripheral chemoreceptors. Which of the following best describes the response of peripheral chemoreceptors to a decrease in partial pressure of oxygen in arterial blood? 

Question 2 of 5

3. A 55-year-old woman with chronic obstructive pulmonary disease presents to her physician for a routine check-up. Due to her condition, she has developed chronic hypercapnia. Which of the following best describes the long-term adaptation of her chemoreceptors to elevated levels of CO2? 

Question 3 of 5

4. A 22-year-old woman is participating in a research study evaluating the response to sudden standing from a lying position. Which of the following is the initial response of the baroreceptor reflex to this change in position? 

Question 4 of 5

5. A patient is exposed to a high-altitude environment with decreased atmospheric oxygen levels. Which of the following responses would most likely occur as a result of peripheral chemoreceptor stimulation? 

Question 5 of 5


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