A 3-year-old boy who is suffering from convulsions is brought to the emergency department by his parents. They report finding him eating a rodenticide, which they brought with them for identification. The active ingredient in this brand of poison is strychnine. How does strychnine work?

A 3-year-old boy who is suffering from convulsions is brought to the emergency department by his parents. They report finding him eating a rodenticide, which they brought with them for identification. The active ingredient in this brand of poison is strychnine. How does strychnine work?

An individual lacks the ability to synthesize dopamine in the axoplasm of the adrenergic neuron. Should the problem occur at the rate-limiting step of this conversion, which of the following substances will accumulate?

A 54-year-old man with multiple medical problems and anxiety is placed on diazepam. He has been taking the medication for 6 months. He is concerned that he is having changes in his memory as a result of being on this medication. Which of the following memory effects are likely?

A 62-year-old woman with a history of mental decline, impaired physical activity, and significant mood impairment is seen by her primary care physician. Treatment with a tricyclic antidepressant has begun. Which of the following statements regarding this therapeutic option is true?

A 53-year-old man with long-standing schizophrenia has failed therapy with both first- and second-generation antipsychotic agents. He still has significant problems with mood, delusions, and hallucinations. He is placed on clozapine. Which of the following effects must the treating physician be aware of?