Answer- True- The cerebrum makes up 85% of the brain’s weight, and the brain makes up about 2% of a human’s body weight. The texture of the brain is like a firm jelly.

ANSWER: TRUE, A two-year-old baby will have an 80% fully grown brain. It will continue to grow until you’re about 18 years old. It isn’t until about the age of 25 that the human brain reaches full maturity. The human brain is the largest brain of all vertebrates relative to body size

ANSWER: FALSE- About 75% of the brain is made up of water
This means that dehydration, even as small as 2%, can have a negative effect on brain functions. Dehydration and a loss of sodium and electrolytes can cause acute changes in memory and attention. To prevent any loss of body or brain function, take steps to keep your body properly hydrated.

Answer: False. Headaches are caused by a chemical reaction. Chemical activity in your brain, the nerves or blood vessels surrounding your skull, or the muscles of your head and neck (or some combination of these factors) can play a role in primary headaches. Serotonin is a chemical necessary for communication between nerve cells. When serotonin or estrogen levels change, the result for some is a headache or migraine. Serotonin levels may affect both sexes, while fluctuating estrogen levels affect women only.

Answer: True! The brain has a higher cholesterol content than any other organ. In fact, about 25% of the body’s cholesterol resides within the brain. The brain is very dependent on cholesterol, but its cholesterol metabolism is unique. Because the blood-brain barrier prevents brain cells from taking up cholesterol from the blood, the brain must produce its own cholesterol. The brain’s cholesterol is much more stable than the cholesterol in other organs, but when it breaks down, it is recycled into new cholesterol right in the brain.

Answer: False. We actually use all of it! We’re even using more than 10 percent when we sleep. Although it’s true that at any given moment all of the brain’s regions are not concurrently firing, brain researchers using imaging technology have shown that, like the body’s muscles, most are continually active over a 24-hour period.

Answer: False. Sleep is SO important!
Your body and brain require rest in order to function properly. Judgement, memory, and reaction time can all be impaired when someone does not have enough sleep. This is due to the fact that sleep deprivation kills brain cells. Proper sleep is also essential for memory retention. During sleep, the brain accumulates all the memories from the day.
Feeling tired? Go ahead and yawn. Yawning cools down the brain, research suggests. Sleep deprivation raises brain temperature. Do you suspect you may be experiencing symptoms of a sleep disorder? Click here for more information

ANSWER: False. There are no pain receptors in the brain itself. But the meninges (coverings around the brain), periosteum (coverings on the bones), and the scalp all have pain receptors. Surgery can be done on the brain and technically the brain does not feel that pain.

ANSWER: True! Aerobic exercise raises your heart rate and increases blood flow to your brain. As your increased breathing pumps more oxygen into your bloodstream, more oxygen is delivered to your brain. This leads to neurogenesis—or the production of neurons—in certain parts of your brain that control memory and thinking. Neurogenesis increases brain volume, and this cognitive reserve is believed to help protect against the effects of dementia.
It has been noted that exercise promotes the production of neurotrophins, leading to greater brain plasticity, and therefore, better memory and learning. In addition to neurotrophins, exercise also results in an increase in neurotransmitters in the brain, specifically serotonin and norepinephrine, which boost information processing and mood.