are brains all the same size?
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Human brains vary considerably in size across adults, with males having slightly larger brains than females. It is hard to pin down what makes the human brain exceptional among mammals—neither brain size, relative brain size nor number of neurons is unique to humans.
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The domestic cat is attributed a value of between 1–1.71; relative to human value, that is 7.44–7.8. The largest brains in the family Felidae are those of the tigers in Java and Bali. It is debated whether there exists a causal relationship between brain size and intelligence in vertebrates.
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The brain of an Alzheimer's patient is considerably smaller than the brain of a healthy individual. In fact, the brain shrinks down to as little as one-third its normal size as the disease progresses.
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The anatomical composition of the male and female ear is identical, yet additional research at the Indiana University School of Medicine also suggests that men listen differently than women. Specifically, women appear to use both sides of the brain while men rely more heavily on one when listening.
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Orcas' brains are 2 1/2 times average -- similar to those of chimpanzees. But scientist think that looking just at the brain-body ratio seriously underestimates the thinking power of larger marine mammals. In other words, orcas might be even much smarter than the size of their big brain suggests.
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“Great minds think alike,” goes the old saying. It's a fun bromide to invoke when you and one of your friends come up with the same thought—no matter how profound or harebrained—at the same time. Now a newly published study suggests that it's literally true: People who get along well share similar neural patterns.
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By that measure, human brains, by comparison, are seven times average. Orcas' brains are 2 1/2 times average -- similar to those of chimpanzees. ... In other words, orcas might be even much smarter than the size of their big brain suggests.
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Small numbers are processed in the right side of the brain, while large numbers are processed in the left side of the brain, new research suggests. The study, from scientists at Imperial College London, offers new insights into the mystery of how our brains handle numbers.
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By analyzing the MRIs of 949 people aged 8 to 22, scientists at the University of Pennsylvania found that male brains have more connections within each hemisphere, while female brains are more interconnected between hemispheres.
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Lab Exercises 10-1. The sheep brain is quite similar to the human brain except for proportion. The sheep has a smaller cerebrum. Also, the sheep brain is oriented anterior to posterior (more horizontally), while the human brain is oriented superior to interior (more vertically.)
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Is the brain a muscle or organ? The brain is an organ, and a very unusual and complex one at that. It plays a role in every one of our functions, controlling many organs, our thoughts, memory, speech, and movements. At birth, the average brain weighs 1 pound and increases to approximately 3 pounds by adulthood.
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Do identical twins have the same dick sizes? They will be similar in size, even so similar as to appearing identical but there can be variations within the size. ... So in a way, yes they will have sizes really close to being identical assuming they were raised under similar situations.
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Yes, Protons, Neutrons, Electrons and Photons have the same Dimensions. They have different numbers of shells but the outer shell is always the same width because the more Energy Quanta you have then the more Space shrinks.
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Are all the types of bacterias are in same size? Are all the types of bacterias are in same shape and colour? do all types of bacterias are harmful to us? How can bacteria helpful to us?
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The human brain is the command center for the human nervous system. It receives signals from the body's sensory organs and outputs information to the muscles. The human brain has the same basic structure as other mammal brains but is larger in relation to body size than any other brains.
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2). Remarkably, the human cerebral cortex, which represents 82% of brain mass, holds only 19% of all neurons in the human brain – a fraction that is similar to the fraction that we observed in several other primates, rodents, and even insectivores (Figure ​ 1).
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Identical twins have identical genes but they don't have identical brains and that is because learning leads to anatomical changes in the brain and even identical twins will have different social experiences, different learning experiences, and therefore will end up having different brains.