How Well Do You Know Your Brain?

The brain feels no pain.

• True

• False

It is impossible to tickle yourself.

• True

• False

The bigger the brain, the more intelligent the person is.

• True

• False

The average woman's brain is larger than that of the average man.

• True

• False

Brain blood vessels are long enough to wrap around the whole Earth four times when stretched out.

• True

• False

The brain produces ample electrical power when awake to light a bulb.

• True

• False

The left side of your brain controls the left side of your body, while the right brain controls the right side of the body.

• True

• False

The fattest organ in your body is your brain.

• True

• False

The brain can live for 7 to 8 minutes without oxygen.

• True

• False

Your brain can juggle more than two conscious tasks at once.

• True

• False

What may cause déjà vu?

• Confusion between dreams and reality

• Being somewhere new that resembles a place you remember

• Faulty brain wiring

• A concussion

What surprised scientists about Albert Einstein’s brain?

• It was missing several key parts

• His brain cells' nerve fibers were longer than average

• His brain was no bigger than average

• Certain lobes of his brain appeared larger than normal

About how much does your brain weigh?

• 1.5 pounds (0.7 kilograms)

• 3 pounds (1.4 kilograms)

• 6.5 pounds (2.9 kilograms)

• 13 pounds (5.9 kilograms)

Meditation has been shown to improve the ability to pay attention and make decisions.

• True

• False

What do most people mainly use the left side of the brain for?

• Language

• Music

• Spatial abilities

• Face recognition

The more you use your brain, the stronger it stays.

• True

• False

What raises your chances of having a stroke?

• High blood pressure

• Exposure to UV radiation

• Emotional stress

• Mercury poisoning

How do brain cells signal one another?

• Through chemicals called neurotransmitters

• By making tiny vibrations

• Through magnetic attraction

What is "gray matter"?

• The protective lining around your brain

• The cell bodies of neurons

• The myelin sheath

How much of your energy does your brain use?

• 5%

• 10%

• 25%

• 75%

Which images register strongest in your brain?

• Faces

• Words

• Cuddly animals

How many brain cells are in your brain?

• 10 million

• 2 billion

• 100 billion

• 300 billion

A good night’s sleep allows your brain to store memories.

• True

• False

Brain cells generally live longer than other cells.

• True

• False