The human brain is the main organ of the human central nervous system. It is located in the head, protected by the skull. It has the same general structure as the brains of other mammals, but with a more developed cerebral cortex. Large animals such as whales and elephants have larger brains in absolute terms, but when measured using a measure of relative brain size, which compensates for body size, the quotient for the human brain is almost twice as large as that of a bottlenose dolphin, and three times as large as that of a chimpanzee, though the quotient for a treeshrew`s brain is larger than that of a human`s.
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授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
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標準授權 | XS | 480 x 270 | JPG | 13 | |
標準授權 | S | 800 x 450 | JPG | 15 | |
標準授權 | M | 2309 x 1299 | JPG | 18 | |
標準授權 | L | 2981 x 1677 | JPG | 20 | |
標準授權 | XL | 3840 x 2160 | JPG | 22 | |
標準授權 | MAX | 4618 x 2598 | JPG | 23 | |
標準授權 | TIFF | 5431 x 3055 | TIF | 39 | |
進階授權 | WEL | 4618 x 2598 | JPG | 88 | |
進階授權 | UEL | 4618 x 2598 | JPG | 88 |
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標準授權 | 480 x 270 px | JPG | 13 點 |
標準授權 | 800 x 450 px | JPG | 15 點 |
標準授權 | 2309 x 1299 px | JPG | 18 點 |
標準授權 | 2981 x 1677 px | JPG | 20 點 |
標準授權 | 3840 x 2160 px | JPG | 22 點 |
標準授權 | 4618 x 2598 px | JPG | 23 點 |
標準授權 | 5431 x 3055 px | TIF | 39 點 |
進階授權 | 4618 x 2598 px | JPG | 88 點 |
進階授權 | 4618 x 2598 px | JPG | 88 點 |