Which of the following is true of opioid systems and effects?
A) Opioids reduce appetite.
B) Opioids are commonly used to induce diarrhea. .
C) Heroin is an opioid receptor antagonist.
D) Naloxone is an opioid receptor antagonist.
E) Opioid drugs enhance the aversiveness of pain.
Answer: D
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What are stem cells?
a. Cells that form the tip of the spinal cord b. Cells that stimulate the body's organs for brief, vigorous activity c. Cells that contribute to the immune response when someone is ill d. Undifferentiated cells that can develop into other types of cells
According to Heckhausen & Schulz, 1995, people apparently become more internally oriented as they grow older, reaching a peak in:
a. old age. c. their mid-20s. b. middle age. d. their mid-80s.
Explain why the human nervous system (including the brain) can be considered an information-processing system, and identify the parts of the nervous system that perform the major functions of an information-processing system.?
What will be an ideal response?
Which one of the following statements is true concerning the nonequivalent control group design?
a. It has an experimental and control group but lacks random assignment of subjects to groups. b. It uses two nonequivalent control groups with random assignment of subjects to groups. c. It is used to make comparisons between two non equivalent groups that are randomly assigned to experimental and control conditions. d. It uses two groups that are initially the same but are found to be nonequivalent at the end of the study.