A Study by Shan and Others Found That the Volume

question 141

Multiple Choice

A study by Shan and others found that the volume of the brain was _____ in older adults than younger adults.

• A)20 percent more
• B)15 percent less
• C)25 percent less
• D)10 percent more

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Definitions:

Brain Chemicals

Chemicals in the brain that transmit messages between neurons, including neurotransmitters like serotonin and dopamine.

Neurotransmitter

Chemical substances released from nerve endings that transmit signals across a synapse from one neuron to another neuron, muscle cell, or gland cell.

Mood Disorders

A category of mental disorders involving persistent disturbances in mood, encompassing conditions like depression and bipolar disorder.

Endorphins

The body’s own natural painkillers, which block pain and produce a feeling of well-being.