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?

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?

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?

A 68-year-old woman with a long history of sadness, gloom, and weight loss presents to her primary care physician for treatment. She is treated with a selective serotonin reuptake inhibitor. Which of the following statements is true?

A 49-year-old man with long-standing schizophrenia is hospitalized for a symptom exacerbation. His primary care physician places him on a second-generation antipsychotic agent. Characteristics of this agent include which of the following?