A cell in the human nervous system whose primary function is to provide insulation and structure for neurons on which they may develop and work is called a(n) __________.
A. epidermal cell
B. adipose cell
C. glial cell
D. myelin sheath
Answer: C
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A researcher wants to see if a protein-enriched diet will enhance the maze-running performance of rats. One group of rats is fed the high-protein diet for the duration of the study; the other group continues to receive ordinary rat chow. In this experiment, the rats' maze-running performance is the
a. correlated variable. b. control variable. c. dependent variable. d. independent variable.
Which factor is related to the prevention and/or treatment of osteoporosis in women?
A. cessation of exercise B. increased carbohydrate intake C. drug therapy D. bone marrow replacement therapy
What is true of infant brain development?
A. Neurons continuously proliferate until one year of age. B. Myelination is complete by the time a fetus is full-term. C. The formation of axons and dendrites contribute to a major growth spurt of the neonatal brain. D. The development of intentional physical activity coincides with an increase in brain size.
What is the best course of action when a person is threatening suicide and has a specific, workable plan?
a. Document the incident in case the situation worsens, but take care not to overreact. b. Ask the person to accompany you to a mental health clinic or hospital emergency room. c. Be supportive and try to get day-to-day commitments from the person, such as meeting for lunch. d. Ignore the threat so that you don't reinforce death-obsessed verbalizations.