The Encyclopedia Americana, Volume 4Grolier, 1988 - Encyclopedias and dictionaries |
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Page 419
BRAIN The human brain is the most complex and highly specialized organ in the human body . Structurally , it is a mass of nervous tissue , weigh- ing about 3 pounds ( 1.3 kg ) and consisting of more than 10 billion cells . Together with ...
BRAIN The human brain is the most complex and highly specialized organ in the human body . Structurally , it is a mass of nervous tissue , weigh- ing about 3 pounds ( 1.3 kg ) and consisting of more than 10 billion cells . Together with ...
Page 421
BRAIN : 2. Major Divisions of the Brain BRAIN : 2. Major Divisions of the Brain BRAIN : posed of many different neurons . As the impulse is transmitted from the axon of one neuron to the dendrite of the next neuron , it passes over a ...
BRAIN : 2. Major Divisions of the Brain BRAIN : 2. Major Divisions of the Brain BRAIN : posed of many different neurons . As the impulse is transmitted from the axon of one neuron to the dendrite of the next neuron , it passes over a ...
Page 429
BRAIN : 4. Brain Research BRAIN : 4. Brain Research BRAIN : 4. Brain Research. practiced trephining ( or trepanning ) which con- sisted of boring holes in the skull , presumably to let demons or evil spirits escape . According to the ...
BRAIN : 4. Brain Research BRAIN : 4. Brain Research BRAIN : 4. Brain Research. practiced trephining ( or trepanning ) which con- sisted of boring holes in the skull , presumably to let demons or evil spirits escape . According to the ...
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