스트레스와 뇌에 대한 퀴즈

What is the effect of chronic stress on the brain?

• Increases the size of the brain.

• Improves emotional regulation.

• Reduces neural connections.

• Enhances memory.

Answer explanation

Chronic stress negatively impacts the brain by reducing neural connections, which can impair cognitive functions and emotional regulation. This is contrary to the other options, which suggest positive effects.

What does the HPA axis regulate?

• Body's immune response

• Body's response to stress

• Digestive system

• Hormone secretion

Answer explanation

The HPA axis, or hypothalamic-pituitary-adrenal axis, primarily regulates the body's response to stress by controlling the release of stress hormones like cortisol.

What are the long-term effects of high cortisol levels?

• Enhances memory.

• Reduces the prefrontal cortex.

• Increases the number of nerve cells.

• Reduces stress response.

Answer explanation

High cortisol levels can lead to a reduction in the size and function of the prefrontal cortex, which is crucial for decision-making and emotional regulation, making 'Reduces the prefrontal cortex' the correct choice.

What activity helps reduce stress and increase the size of the hippocampus?

• Exercise and meditation

• Using social media

• Reading

• Playing video games

Answer explanation

Exercise and meditation are known to reduce stress and promote neurogenesis, which can increase the size of the hippocampus, a brain region involved in memory and emotional regulation.

What is the effect of the parenting style of mother rats on their offspring?

• It causes genetic changes.

• It reduces sensitivity to stress.

• It decreases the number of nerve cells.

• It enhances memory.

Answer explanation

Mother rats that exhibit nurturing behaviors can reduce their offspring's sensitivity to stress, promoting better stress management and resilience in their young.

Which part of the brain is affected by chronic stress?

• Occipital lobe

• Visual cortex

• Hippocampus

• Cerebellum

Answer explanation

Chronic stress primarily affects the hippocampus, which is crucial for memory and learning. Prolonged stress can lead to hippocampal atrophy, impacting cognitive functions.

What kind of changes affect gene expression?

• Environmental changes

• Physical changes

• Epigenetic changes

• Genetic changes

Answer explanation

Epigenetic changes, such as DNA methylation and histone modification, directly influence gene expression without altering the underlying DNA sequence. This makes them a key factor in how genes are turned on or off in response to various stimuli.

What is the most effective way to manage stress?

• Being alone

• Excessive caffeine intake

• Exercising and meditating

• Overeating

Answer explanation

Exercising and meditating are proven methods to effectively manage stress. They promote physical health and mental clarity, helping to reduce anxiety and improve overall well-being, unlike the other options which can exacerbate stress.