10 Brainy facts, Work out your Brain

[messam]

I was reading through this and thought to share it.. Hope you guys like it. !!!

- Your brain needs a continuous supply of oxygen. A 10 minute loss of oxygen will usually cause significant neural damage. Cold can lengthen this time, which is why cold-water drowning victims have been revived after as nuch as 40 minutes - without brain damage.

- Your brain uses a fifth of all your blood. It needs it to keep up with the heavy metabolic demands of its neurons. It needs not only the glucose that is delivered, but of course, the oxygen.

- Your brain feels no pain. There are no nerves that register pain within the brain itself. Because of this, neurosurgeons can probe the brain while a patient is conscious (what fun!). By doing this, they can use feedback from the patient to identify important regions, such as those used for speech, or visualization.

- The cerebellum is sometimes called the "little brain," and weighs about 150 grams (a little over five ounces). Found at the lower back side of your brain, you need your cerebellum to maintain posture, to walk, and to perform any coordinated movements. It may also play a role in your sense of smell.

- The human brain weighs an average of a little over three pounds, or 1.4 kilograms. Albert Einstein's brain may have been smaller than yours, because he was smaller than average. There is a general correlation between body size and the size of our brains.

- An elephant's brain is huge - about six times as large as a human brain. However, in relation to body size, humans have the largest brain of all the animals, averaging about 2% of body weight. A cat's brain? It weighs about one ounce, a little over 1% of body weight.

- There are about 100,000 miles of blood vessels in the brain. If they were stretched out (there's a nice thought!) they would circle the earth more than four times.

- If you have an average sized brain, you have about 100 billion neurons up there. You'll be happy about that after reading the next item.

- Approximately 85,000 neocortical neurons are lost each day in your brain. Fortunately, his goes unnoticed due to the built-in redundancies and the fact that even after three years this loss adds up to less than 1% of the total. Oh, and look at the next item.

- Recent research proves that your brain continues to produce new neurons throughout your life. It also proves that it does so in response to stimulation (do those brainpower exercises). Scientists refer to this as brain plasticity or neuro-plasticity. You may find this one the most encouraging of these brain facts.

 

[Baba jee]

Fun Facts about Brain:13:

Dimensions and Sizes

• Average dimensions of the adult brain: Width = 140 mm/5.5 in, Length = 167 mm/6.5 in, Height = 93 mm/3.6 in.
• How much does human brain weigh? At birth our brains weigh and average of 350-400g (about 4/5 lbs), as adults the brain averages 1300-1400g (about 3 lbs).
• If Stretched out the cerebral cortex would be 0.23 sq. m(2.5sq.ft), the area of a night table.
• Total surface area of the cerebral cortex is 2,500 cm2 or 2.69 sq.ft.

Composition

• The composition of the brain = 77-78% water, 10-12% lipids, 8% protein, 1% carbs, 2% soluble organics, 1% inorganic salt.
• The breakdown of intracranial contents by volume (1,700 ml, 100%): brain = 1,400 ml (80%); blood = 150 ml (10%); cerebrospinal fluid = 150 ml (10%).
• The cerebellum contains half of all the neurons in the brain but comprises only 10% of the brain.
• The cerebral cortex is about 85% of the brain.
• Percentage of total cerebral cortex volume = frontal lobe 41%, temporal lobe 22%, parietal lobe 19%, occipital lobe 18%.
• There are about 100 billion neurons in the human brain, the same number of stars in our galaxy.
• The left hemisphere of the brain has 186 million more neurons than the right hemisphere.
• 750-1000ml of blood flow through the brain every minute or about 3 full soda cans.
• In that minute the brain will consume 46cm3 (1/5 cups) of oxygen from that blood.
• Of that oxygen consumed, 6% will be used by the brain's white matter and 94% by the grey matter.

Times

• The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
• The slowest speed at which information travels between neurons is 416 km/h or 260 mph, thats as "slow" as todays supercar's top speed (the Bugatti EB 16.4 Veyron clocked at 253 mph).
• 10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
• Time until reflex loss after loss of blood supply to the brain, 40-110 seconds.
• During early pregnancy the rate of neuron growth is 250,000 neurons a minute.

Fun Facts About The Human Brain

• Results from cognitive tests show 30% of 80-year-olds perform as well as young adults.
• Your brain is about 2% of your total body weight but uses 20% of your body's energy.
• The energy used by the brain is enough to light a 25 watt bulb.
• More electrical impulses are generated in one day by a single human brain than by all the telephones in the world.
• How much does human brain think? 70,000 is the number of thoughts that it is estimated the human brain produces on an average day.
• After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
• Albert Einsteins brain weighed 1,230 grams (2.71 lbs), significantly less then the human average of 1,300g to 1,400g (3 lbs).
• Each year Americans consume 50 billion aspirin tablets or 15.5 million tons.
• 89.06 is the percentage of people who report normally writing with their right hand, 10.6% with their left and 0.34% with either hand.

 

[Wadaich]

I was reading through this and thought to share it.. Hope you guys like it. !!!

- Your brain needs a continuous supply of oxygen. A 10 minute loss of oxygen will usually cause significant neural damage. Cold can lengthen this time, which is why cold-water drowning victims have been revived after as nuch as 40 minutes - without brain damage.

- Your brain uses a fifth of all your blood. It needs it to keep up with the heavy metabolic demands of its neurons. It needs not only the glucose that is delivered, but of course, the oxygen.

- Your brain feels no pain. There are no nerves that register pain within the brain itself. Because of this, neurosurgeons can probe the brain while a patient is conscious (what fun!). By doing this, they can use feedback from the patient to identify important regions, such as those used for speech, or visualization.

- The cerebellum is sometimes called the "little brain," and weighs about 150 grams (a little over five ounces). Found at the lower back side of your brain, you need your cerebellum to maintain posture, to walk, and to perform any coordinated movements. It may also play a role in your sense of smell.

- The human brain weighs an average of a little over three pounds, or 1.4 kilograms. Albert Einstein's brain may have been smaller than yours, because he was smaller than average. There is a general correlation between body size and the size of our brains.

- An elephant's brain is huge - about six times as large as a human brain. However, in relation to body size, humans have the largest brain of all the animals, averaging about 2% of body weight. A cat's brain? It weighs about one ounce, a little over 1% of body weight.

- There are about 100,000 miles of blood vessels in the brain. If they were stretched out (there's a nice thought!) they would circle the earth more than four times.

- If you have an average sized brain, you have about 100 billion neurons up there. You'll be happy about that after reading the next item.

- Approximately 85,000 neocortical neurons are lost each day in your brain. Fortunately, his goes unnoticed due to the built-in redundancies and the fact that even after three years this loss adds up to less than 1% of the total. Oh, and look at the next item.

- Recent research proves that your brain continues to produce new neurons throughout your life. It also proves that it does so in response to stimulation (do those brainpower exercises). Scientists refer to this as brain plasticity or neuro-plasticity. You may find this one the most encouraging of these brain facts.

:jazak: Nice sharing.