Brain facts

How many cells does the human brain have?

• Approximately 1 billion

• About 10 billion

• Around 50 billion

• More than 100 billion

Which side of the brain is responsible for our creativity?

• The left side of the brain

• The right side of the brain

• The frontal lobe

• The occipital lobe

What are the three layers of the human brain?

• The reptilian brain, the mammalian brain, and the human brain.

• The cerebral cortex, the limbic system, and the brainstem.

• The forebrain, midbrain, and hindbrain.

• The neocortex, the amygdala, and the hippocampus.

What percentage of a day's calories does the human brain consume?

• 10 - 15 %

• 20 - 30 %

• 30 - 40 %

• 5 - 10 %

How old are we when our brains are fully mature?

• 18 years

• 21 years

• 25 years

• 30 years

How much does the average human brain weigh?

• 1.2 kg

• 1.4 kg

• 1.6 kg

• 1.8 kg

What links the right and the left side of the brain? What does it do?

• The corpus callosum: this is like a telephone exchange. It carries millions of messages between the two sides of the brain.

• The cerebellum: it controls balance and coordination between the two sides of the body.

• The thalamus: it processes sensory information before sending it to the brain.

• The hippocampus: it is responsible for memory formation and spatial navigation.

What happens to the frontal lobes of the brain during our early teens?

• The frontal lobes become overcrowded with too many synapses.

• The frontal lobes shrink in size and function.

• The frontal lobes develop enhanced connectivity with the amygdala.

• The frontal lobes become less active and more dormant.