A 22 year old graduate student is brought to the emergency d…
A 22 year old graduate student is brought to the emergency department following exposure to an unknown substance.. Physical examination reveals that his skin is very warm to touch. It has an increased body temperature, tachycardia, and widely dilated pupils unresponsive to light. Although he is rambling, almost incoherently, it is possible to determine that he is complaining of profound thirst and dryness of the mouth. These signs and symptoms suggest that the patient is experiencing serious adverse effects from which of the following drug categories?