Understanding Microglia and Their Role in the Brain

What is the primary role of neurons in the brain?

• To produce cytokines

• To send electrochemical messages

• To act as the brain's janitors

• To shape-shift and eat neurons

Why were glial cells historically overlooked in favor of neurons?

• They were thought to be harmful

• They were considered part of the immune system

• They do not produce electrical impulses

• They were too small to be seen

What is one of the key functions of microglia in the brain?

• To act as the brain's glue

• To produce electrical impulses

• To clean out dead cells and pathogens

• To form new neurons

How do microglia contribute to synaptic pruning?

• By secreting chemicals to strengthen connections

• By forming new synapses

• By eating poorly functioning synapses

• By producing electrical impulses

What can cause microglia to become overactive or underactive?

• Stress and childhood experiences

• Genetic mutations

• Lack of sleep

• Diet and exercise

How might overactive microglia contribute to depression?

• By reducing stress hormones

• By producing more neurons

• By destroying healthy synapses

• By forming new synapses

What is a debated role of microglia in Alzheimer's disease?

• They only harm by eating healthy neurons

• They only help by eating plaques

• They are not involved at all

• They can be both helpful and harmful

What nutrient was used in a study to manipulate microglia activity in mice?

• Iron

• Choline

• Vitamin C

• Calcium

What is a potential outcome of microglia dysfunction in autism?

• Improved cognitive function

• Increased neuron production

• More synapses in certain brain areas

• Decreased brain size

What is a challenge in using microglia as a universal treatment for psychiatric conditions?

• They are not present in all individuals

• They only affect physical health

• They are too difficult to study

• Their activity is not unusual in all cases