What are nerves in the body?

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asked Jul 12 in Other- Health by 3009stacs (950 points)
What are nerves in the body?

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answered 3 days ago by iamAston (1,460 points)

The nerves in the body are bundles of axons in the peripheral nervous system (PNS) that act as information highways to carry signals between the brain and spinal cord and the rest of the body.

Each axon is wrapped in a connective tissue sheath called the endoneurium.

In a way the nerves in our bodies are like electrical wires flowing the electricity through the wires but instead the nerves have signals and also electrical signals being sent through the nerves.

These nerves allow our brain to control our body and allow movement etc.

In the human body there are over 7 trillion nerves.

All these nerves are part of what’s known as your body’s nervous system.

You can think of nerves as your body’s electrical wiring as they transmit signals between your brain, spinal cord, and the rest of your body.

The nervous system consists of two components:

  • The central nervous system, which is made up of the brain, spinal cord, and nerves
  • The peripheral nervous system, which is made up of sensory neurons, clusters of neurons called ganglia, and other nerves that connect to one another as well as the rest of the central nervous system

These nerves and cells, called neurons, send messages throughout your body.

All nerves are important for proper day-to-day functioning, but there are two groups of nerves chiropractors focus on the most: cranial and spinal nerves.

Cranial nerves are located on the bottom surface of your brain.

There are 12 pairs of them, and they each have their own special function.

These cranial nerves connect your brain to different parts of your head, neck and trunk.

To prevent confusion (and because these nerves are located so close together), each pair is numbered with a Roman numeral, beginning at the front and moving to the back.

For example, the first nerve closest to the front of your head is the olfactory nerve, so its Roman numeral designation is I.

Most of the time, cranial nerves are classified as being either sensory or motor.

Sensory refers to your five senses — touch, smell, taste, hearing, and sight — and motor nerves are responsible for controlling the movement and function of glands or muscles.

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