A 68-year-old man with a history of Parkinson disease is hospitalized for pneumonia and sepsis. The patient is treated with intravenous (IV) fluids and antibiotics. He is also started on an infusion of IV dopamine for hemodynamic support. Although the manifestations of Parkinson disease are attributed to dopaminergic neuron degeneration in the substantia nigra, IV dopamine does not improve this patient's Parkinson symptoms. Which of the following cell structures accounts for this lack of responsiveness?

Question

A 68-year-old man with a history of Parkinson disease is hospitalized for pneumonia and sepsis.  The patient is treated with intravenous (IV) fluids and antibiotics.  He is also started on an infusion of IV dopamine for hemodynamic support.  Although the manifestations of Parkinson disease are attributed to dopaminergic neuron degeneration in the substantia nigra, IV dopamine does not improve this patient's Parkinson symptoms.  Which of the following cell structures accounts for this lack of responsiveness?

Quizplus · Accepted Answer

The Answer is F

A 68-Year-Old Man with a History of Parkinson Disease Is