Although pain relief is now the major medical use for opioids, they have been used to save many lives (especially in underdeveloped countries) because of their ability to

Many people are surprised to learn that about _____ percent of inpatients with major depression still receive electroconvulsive therapy

A) 4 B) 5 C) 8 D) 10

What is the biggest reason why we use animals in research?

a. Animals have simple behavior that makes it easy to see changes. b. Animals don't live as long as humans. c. We can do things to animals that we can't do to people. d. Animals are easier to control.