Which of the Following Is Not Correct

question 191

Multiple Choice

Which of the following is not correct?

• A)Across countries there are large differences in the average income per person. These differences are reflected in large differences in the quality of life.
• B)With a growth rate of about 2 percent per year, average income per person doubles about every 35 years.
• C)The ranking of countries by average income changes very little over time.
• D)In some countries real income per person has changed very little over many years.

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Definitions:

CNS Cavities

Hollow spaces within the central nervous system, including ventricles in the brain, filled with cerebrospinal fluid.

Astrocytes

Astrocytes are star-shaped glial cells in the brain and spinal cord involved in providing support and nutrition to nerve cells, maintaining the blood-brain barrier, and repairing the brain and spinal cord following traumatic injuries.

Microglia

Specialized immune cells found in the brain and spinal cord, involved in the maintenance of nerve cells and the response to injury or disease.

Ependymal Cells

Glial cells that line the ventricles in the brain and the central canal of the spinal cord, involved in the production of cerebrospinal fluid.