Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

Exercise 13

The most widely used illegal drug in the United States is (a) _____. In low doses it produces mild euphoria, in moderate doses it produces distortions in perception and time, and in high doses it may produce hallucinations and delusions. Researchers discovered that the brain has neural locks, or THC (b) _____, that are highly concentrated in the brain and respond to the THC in marijuana. The brain makes its own chemical, called (c) _____, which is one of the brain's own (d) _____ and closely resembles THC. Throughout the brain are many THC receptors that are involved in a number of behaviors, including (e) _____.