Brain

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In animals, including humans, the brain is the control center for the body. As a part of the nervous system, the brain receives and makes sense of signals sent from nerve cells in the body. The brain also sends information to the body’s muscles and organs.

brain stem: human brain

The brains of humans and other vertebrates (animals with a backbone) are large masses of nerve cells protected by a skull.

The human brain is a very powerful . It controls the working of all parts of the body. It also controls a person’s thoughts and feelings. It allows a person to sense the outside world. The brain helps the body to stay healthy and to respond in the right way to its environment.

The brain of an average adult weighs about 3 pounds (1.4 kilograms). It looks something like a mushroom.

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The brains of vertebrates other than humans are divided into three main sections: hindbrain, midbrain, and forebrain. In fish and amphibians, the midbrain is the main center of the brain. The midbrain is less important in mammals, birds, and reptiles. However, these animals have larger forebrains. The cerebrum is the largest part of the forebrain in mammals, birds, and reptiles. It is the center of learning in those animals.

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