What organ of the nervous system relays information to and from the brain?

What nerves bring information to the brain?

Sensory nerve root (posterior nerve root): The sensory root enters the back of the spinal cord. Sensory nerve fibers carry sensory information (about body position, light, touch, temperature, and pain) to the brain from other parts of the body.

How does the brain transfer information?

The transfer of information from neuron to neuron takes place through the release of chemical substances into the space between the axon and the dendrites. These chemicals are called neurotransmitters, and the process is called neurotransmission. The space between the axon and the dendrites is called the synapse.

What controls the nerve impulses to and from the brain?

An axon, or nerve fiber, carries nerve impulses to other neurons or to muscle. … They also carry nerve impulses to the brain and spinal cord. Motor neurons transmit nerve impulses from the brain and spinal cord to a specific area of the body.

What carries messages from the sense organ to the brain?

The thalamus carries messages from the sensory organs like the eyes, ears, nose, and fingers to the cortex. The hypothalamus controls your pulse, thirst, appetite, sleep patterns, and other processes in your body that happen automatically.

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How fast does the brain transfer information?

In the human context, the signals carried by the large-diameter, myelinated neurons that link the spinal cord to the muscles can travel at speeds ranging from 70-120 meters per second (m/s) (156-270 miles per hour[mph]), while signals traveling along the same paths carried by the small-diameter, unmyelinated fibers of …

What does the brain do as soon as it receives information?

The brain works like a big computer. It processes information that it receives from the senses and body, and sends messages back to the body. … Brain tissue is made up of about 100 billion nerve cells (neurons) and one trillion supporting cells which stabilize the tissue.