A 52-year-old man who depends upon his three cups of coffee per day, which he purchases at his place of work, suddenly finds that the coffee stand has closed. He now is unable to drink his three cups of coffee per day. Which of the following effects might he exhibit at work?

A 52-year-old man who depends upon his three cups of coffee per day, which he purchases at his place of work, suddenly finds that the coffee stand has closed. He now is unable to drink his three cups of coffee per day. Which of the following effects might he exhibit at work?

A 59-year-old man presents to his primary care physician with an extremely sore shoulder following an accident at work. He is not found to have any fractures or tears and is treated with an injection of prednisolone for bursitis. He smokes and is currently taking levothyroxine because of a thyroidectomy, a β-blocker for mild heart failure, and prazosin for benign prostatic hyperplasia. His medications and the nicotine in his cigarettes each act on a different receptor. Activation of which of the following receptors produces the fastest cellular response?

An 83-year-old man is brought to the clinic by his family with complaints stating he can no longer perform his daily activities or be trusted to live on his own. During his neurological exam, he presents with moderate memory loss, apraxia, and anomia. Also, he displays aggressive behaviors throughout the physical exam. He was diagnosed to be in an early stage of Alzheimer's disease. What class of drugs would be most helpful in treating the patient?

A 15-year-old boy attempts suicide and is brought to the emergency department by the local rescue squad. He was found in the garage with an opened spray bottle of insecticide nearby. He has lost consciousness. His heart rate is 45 beats/minute, and his blood pressure is 80/40 mm Hg. He is sweating and salivating profusely. What is the most appropriate treatment for this patient?

A 71-year-old man with gradual impairment in short-term memory and speech is thought to have Alzheimer's disease. His primary care physician begins him on rivastigmine. This agent will most likely cause which of the following effects?