the weight of an average human brain is about 1300-1400g.
good question
2006-10-03 01:00:29
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answer #1
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answered by angel 4
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I read somewhere that the male brain weighs 2.5 lbs and the female brain 2 lbs.
2006-10-03 08:52:19
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answer #2
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answered by Just a Guy 4
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The adult human brain weighs about 3 pounds (1,300 - 1,400 g).
* The adult human brain is about 2% of the total body weight, but consumes 20% of the blood's oxygen supply.
* The average human brain is about 140 mm (w) x 167 mm (l) x 93 mm (h).
* The total surface area of the cerebral cortex is about 2200 sq. cm (2.5 sq. ft.)
* The world record for time without sleep is 264 hours (11 days) bye Randy Gardner in 1965.
* Unconsciousness will occur after 8 - 10 seconds after loss of blood supply to the brain.
* Neurons multiply at a rate 250,000 neurons/minute during early pregnancy.
* The weight of an adult human cerebellum is 150 g.
* The total volume of cerebrospinal fluid (CSF) is produced everyday.
* Cerebrospinal fluid is normally clear and colorless.
* There are 12 pairs of cranial nerves.
* There are 31 pairs of spinal nerves.
* There are about 13,500,00 neurons in the human spinal cord.
* The human spinal cord is 45 cm long in men and 43 cm long in women.
* Humans can hear in the range of 20 Hz to 20,000 Hz.
* The most sensitive range of human hearing is between 1,000 - 4,000 Hz.
* Pain occurs when sounds are above 130 db.
* Hearing damage can occur if people are exposed to sounds above 90db for an extended period of time.
* The total number of human taste buds (tongue, palate, cheeks) is about 10,000.
* The total number of human olfactory receptor cells is about 40 million.
* There are 1,000 to 10,000 synapses for a "typical" neuron.
* The cell bodies of neurons vary in diameter from 4 microns to 100 microns
* 85% of the brain is water.
* The brain has no pain receptors.
* Headaches are not actually in the brain, but occur in the vascular system around the brain or muscles of the skull.
* A baby's brain has its full complement of neurons by the sixth month of gestation. The brain grows at a rate of more than 13,000 neurons per seconds up to this time.
* It is estimated that there are between 100 - 200 billion neurons in the brain.
* The number of possible different combinations of synaptic connections among neurons in a single human brain is larger than the total number of atomic particles that make up the known universe.
* Cholesterol makes up 15% of the brain by dry weight.
* Peppermint makes you more alert.
* In many elderly people, brain fails before lungs or kidneys do.
* 90% of people in nursing homes suffer from moderate to serious cognitive function.
* 1/2 of 85+ have Alzheimer's disease.
* Brain begins to shrink around the age of 30 due to neuronal loss.
* Men lose brain tissues more significantly than women (approximately 3 times faster)
* From ages between the age of 40 to 50, there is an approximately 2% decrease in overall brain weight.
* Limbic system's hippocampus and amygdala shrinks about 20 - 25% by 60 years of age.
* 25 - 30 % of 80 years olds performed as well as young on cognitive tests.
* More than 6 million of 65+ will experience depression
* 50% of older Americans believe depression as part of aging
2006-10-03 08:09:05
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answer #3
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answered by Doctor C. 3
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yep its 1300 to 1400 grammes
2006-10-03 08:04:48
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answer #4
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answered by Anonymous
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in the case of hardcore music fans about 2 grammes i think
2006-10-03 08:03:57
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answer #5
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answered by Troubled Joe(the ghost of) 6
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8 lbs. Haven't you seen Jerry McGuire? LOL
2006-10-03 08:58:52
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answer #6
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answered by margarita 7
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everybody is different so there are different increments to each person but there are a lot of averages. google may help. what age are you thinking of?
2006-10-03 08:18:31
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answer #7
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answered by Anonymous
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This varies with your race, age, sex and intelligence.
2006-10-03 11:03:13
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answer #8
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answered by scientist 4
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I always thaugt it was ten kilograms
2006-10-03 08:20:19
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answer #9
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answered by aaaaaaa 4
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google it
2006-10-03 08:05:22
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answer #10
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answered by amira19942005 1
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