બુધવાર, 25 એપ્રિલ, 2012

માનવજાત અને પ્રાણીઓના મગજ અને તેનું વજન.

Average Brain Weights (in grams)
નામ- વજન(ગ્રામ)
adult human 1,300 - 1,400
newborn human 350 - 400
sperm whale 7,800
fin whale 6,930
elephant 4,783 humpback whale 4,675
gray whale 4,317 killer whale 5,620
bowhead whale 2,738 pilot whale 2,670
bottle-nosed dolphin 1,500 - 1,600
walrus 1,020 - 1,126
Pithecanthropus Man 850 - 1,000
camel 762
giraffe 680 hippopotamus 582
leopard seal 542 horse 532
polar bear 498
gorilla 465 - 540
cow 425-458 chimpanzee 420
orangutan 370 California sea lion 363
manatee 360
tiger 263.5
lion 240
grizzly bear 234
pig 180
jaguar 157
sheep 140
baboon 137
rhesus monkey 90-97 dog (beagle) 72
aardvark 72
beaver 45
shark (great white) 34 shark (nurse) 32
cat 30
porcupine 25
squirrel monkey 22 marmot 17
rabbit 10-13
platypus 9
alligator 8.4
squirrel 7.6
opossum 6
flying lemur 6
fairy anteater 4.4 guinea pig 4
ring-necked pheasant 4.0
hedgehog 3.35
tree shrew 3
fairy armadillo 2.5
owl 2.2
grey partridge 1.9
rat (400 g body weight) 2
hamster 1.4
elephant shrew 1.3 house sparrow 1.0
european quail 0.9 turtle 0.3-0.7
bull frog 0.24
viper 0.1
goldfish 0.097
green lizard 0.08

% brain of total body weight (150 pound human) = 2%
Average brain width =140 mm
Average brain length= 167 mm
Average brain height= 93 mm

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