What Are 5 Facts About The Nervous System?

What is the most important part of the nervous system?

The brain and the spinal cord make up the central nervous system.

The nervous system is the most complex and highly organized body system.

It receives information from the sensory organs via nerves, transmits the information through the spinal cord, and processes it in the brain..

What is the biggest part of the brain?

cerebrumThe largest part of the brain, the cerebrum has two hemispheres (or halves). The cerebrum controls voluntary movement, speech, intelligence, memory, emotion, and sensory processing.

How much does the human brain weigh?

about 3 poundsAn adult brain weighs about 3 pounds The heaviest normal human brain weighed 4.43 pounds.

How many nerves does human body have?

Believe it or not, there are over 7 trillion nerves in the human body. 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 — they transmit signals between your brain, spinal cord, and the rest of your body.

What is the largest nerve in the body?

The sciatic nerve is the largest nerve in your body. It begins in your lower back and travels all the way down to the heel of your foot. You may have heard of a condition called sciatica in which painful sensations radiate from your lower back and down your leg.

What are the 4 main functions of the nervous system?

The four main functions of the nervous system are:Control of body’s internal environment to maintain ‘homeostasis’ An example of this is the regulation of body temperature. … Programming of spinal cord reflexes. An example of this is the stretch reflex. … Memory and learning. … Voluntary control of movement.

Why is nervous system important to the human body?

The nervous system helps all the parts of the body to communicate with each other. It also reacts to changes both outside and inside the body. The nervous system uses both electrical and chemical means to send and receive messages.

How long is the nervous system?

The nervous system: more than 90,000 miles of sensations! – Visual Dictionary.

Can a person live without the nervous system?

The Nervous System No one can live without a brain. The brain controls almost everything that happens in your body. Because it is so crucial to our survival, it is not surprising, then, that the brain is protected inside a very hard skull.

What are the 2 types of nervous systems?

The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.

What are 5 interesting facts about the nervous system?

11 Fun Facts About the Nervous SystemThe body has billions of nerve cells. … Neurons are made of three parts. … Neurons may look different from one another. … Neurons are programmed to do different things. … There are two parts of the nervous system. … There are two types of nervous systems. … The involuntary system is broken down into three parts.More items…•

What are the 5 main parts of the nervous system?

The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts.