HY USMLE Q #1365 – Physiology

A 56-year-old man comes to the physician for a follow-up appointment. He lies supine on the examination table. He then stands up abruptly. Which of the following combinations of findings is most likely to be seen in this patient immediately upon standing up?

↑ ANP release; ↑ Carotid sinus baroreceptor firing; ↑ Pulmonary capillary hydrostatic pressure
↑ ANP release; ↑ Carotid sinus baroreceptor firing; ↓ Pulmonary capillary hydrostatic pressure
↑ ANP release; ↓ Carotid sinus baroreceptor firing; ↑ Pulmonary capillary hydrostatic pressure
↑ ANP release; ↓ Carotid sinus baroreceptor firing; ↓ Pulmonary capillary hydrostatic pressure
↓ ANP release; ↑ Carotid sinus baroreceptor firing; ↑ Pulmonary capillary hydrostatic pressure
↓ ANP release; ↑ Carotid sinus baroreceptor firing; ↓ Pulmonary capillary hydrostatic pressure
↓ ANP release; ↓ Carotid sinus baroreceptor firing; ↑ Pulmonary capillary hydrostatic pressure
↓ ANP release; ↓ Carotid sinus baroreceptor firing; ↓ Pulmonary capillary hydrostatic pressure