All of the Following Are TRUE Regarding the Brain and Stress

question 169

Multiple Choice

All of the following are TRUE regarding the brain and stress, EXCEPT

• A) high levels of chronic stress can cause brain cells to shrink.
• B) being a little nervous before an exam will lower your performance.
• C) the accumulation of stress effects across the life span can contribute to brain aging.
• D) moderate stress enhances your ability to retain information.

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Definitions:

Blood-Brain Barrier

A selective semipermeable barrier formed by endothelial cells of the brain's capillaries that protects the brain from harmful substances and pathogens in the bloodstream.

CNS

The central nervous system, comprised of the brain and spinal cord, responsible for processing and sending out neural signals.

Myelin Sheath

A fatty layer that encases the axons of some neurons, significantly increasing the speed at which nerve impulses are conducted.

Cerebrospinal Fluid

A clear, colorless body fluid found in the brain and spinal cord, acting as a cushion and providing basic mechanical and immunological protection to the brain.