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kati45 [8]
3 years ago
10

Although janay's brain makes up only about ____ percent of her total body weight, it uses about _____ percent of the total oxyge

n and calories she consumes. janay's brain size and resource usage is similar to that of most human beings.
Biology
1 answer:
In-s [12.5K]3 years ago
3 0
The brain represents 2% of the total body weight for a human. But it uses 20% of the total oxygen and calories absorbed by the body (so ten times more than its weight ratio) it proves that it is an important organ that need a lot of energy.

The brain is the seat of higher functions (cognitive functions, senses, nervous responses) and vegetative functions. It is, therefore, an essential organ that regulates all vital functions. Like a central unit in a desk computer, the brain receives information from the entire human body via afferent nerves, integrates and analyzes them, and responds by emitting new signals that descend to the parts of the body concerned by the efferent nerves.

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