Brain facts
How much does the human brain weigh?
About 1.4 kg.
Humans use only 10% of their brain.
Myth
Half of the brain.
Hemisphere
If humans had bigger brains, they ______ (learn faster)
would learn faster ✅
If scientists had studied the brain earlier, they ______ (discover more)
would have discovered more ✅
Which hemisphere controls logic and language?
Left hemisphere
The brain can adapt after damage.
Fact
Neuron
If humans had only one hemisphere, they ______ (not / be able to control all body functions properly)
would not be able to control all body functions properly ✅
If humans had had bigger brains in the past, they ______ (solve more problems)
would have solved more problems ✅
What connects the two hemispheres?
Nerve fibres.
Right hemisphere = only creativity.
Myth (it also processes emotions)
Connection between neurons
Synapse
If the brain didn’t control temperature, our bodies ______ (overheat / get too cold)
would overheat or would get too cold ✅
If neurons had transmitted signals faster, medicine ______ (improve)
would have improved ✅
Name one function of the brain besides thinking.
Breathing, temperature control, blood pressure, memory, emotions, personality.
The brain is more complex than any computer.
Fact
Bone protecting the brain
Skull
If scientists discovered more brain secrets, medicine and technology ______
would advance faster ✅
If scientists had shared their discoveries sooner, the world ______
would have benefited / would have advanced ✅
What happens if one part of the brain is damaged?
Another part can take over its function.
Scientists fully understand the brain.
Myth
Stronger or more active
Dominant
If humans evolved differently, our brains ______
would be / would function differently / would have … (any logical 2nd conditional answer) ✅
If humans had evolved differently, history ______
would have been / would have changed / would have looked … (any logical 3rd conditional answer) ✅