Step 1 - Respiratory System Questions

Physiology > Respiratory > USMLE/COMLEX 1 - Prep Questions

Q. As obesity continues to be an ongoing health issue throughout the USA, researchers are working to better understand the physiology of breathing and the pathophysiology of obesity related breathing issues. Of particular interest is Obesity Hypoventilation Syndrome. When dealing with OHS, which of the following is true concerning the ways the body exerts respiratory regulation?

Breathing is centrally regulated via the hypothalamus and amygdala
Central chemoreceptors affect breathing by directly detecting blood levels of hydrogen ions
Stretch, irritant, and J receptors all function outside the lung to regulate breathing
Peripheral chemoreceptors stimulate breathing when the partial pressure of oxygen dips below 60 mm/Hg
The aortic and carotid bodies are considered central chemoreceptors
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