A 38-year-old man with chronic anxiety and agitation is currently being treated with a long-acting benzodiazepine. He is having challenges with sleep and is referred to a sleep center for a 24-h sleep study to further ascertain his difficulties. Which of the following is the most likely abnormality to be noted on this study?

A 38-year-old man with chronic anxiety and agitation is currently being treated with a long-acting benzodiazepine. He is having challenges with sleep and is referred to a sleep center for a 24-h sleep study to further ascertain his difficulties. Which of the following is the most likely abnormality to be noted on this study?

A 19-year-old man with a significant seizure history has various seizures including partial onset seizures, myoclonic seizures, and, occasionally, primary generalized tonic-clonic seizures. His physician prescribed levetiracetam. This agent likely works on which of the following structures?

A 26-year-old man complains of tremors, tachycardia, and diaphoresis when speaking in public. He has started a new job that requires him to give frequent presentations to large audiences and is worried he would not be able to work effectively. His physician prescribes propranolol. How will propranolol help with this patient's anxiety?

Regarding differences between the sympathetic and parasympathetic nervous systems in a healthy 29-year-old graduate student athlete, which of the following is a feature of the sympathetic nervous system?

Which of the following changes occur at the neurotransmitter/synaptic space when an excitatory postsynaptic potential is generated?