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The nervous system is the control center for the body. It consists of our spinal cord and brain (central nervous system) and 43 pairs of nerves (peripheral nervous system) branching throughout the body connecting the CNS to various muscles and organs. The nervous system detects either internal or external changes through sensory receptors, sends electrical impulses to the spinal cord and brain which process the information and decides what to do. It then sends another impulse back through the motor neurons which stimulate the effector (either skin, muscle, organ, etc). The nervous system helps us to perform basic functions such as walking, smiling and talking, along with other critical functions that are performed inside our body involuntarily. These functions are controlled by the autonomic nervous system and include things such as; blood pressure, heart rate, digestion and respiration. The autonomic nervous system is a division of the peripheral nervous system, along with the somatic nervous system. The somatic nervous system handles all muscular responses and voluntary actions such as the ones mentioned earlier. The autonomic nervous system can be even further divided into the sympathetic and parasympathetic nervous systems. The sympathetic nervous system handles the body’s “fight or flight” response. It is the body’s way of responding to a perceived threat and causes general alertness and excitement. It speeds up our heart rate and breathing, causes the adrenal glands to release adrenaline and noradrenaline, causes us  to sweat, and inhibits the digestion process. The parasympathetic nervous system does the opposite. This is to maintain balance in the body. The parasympathetic nervous system handles the “rest and digest” response. It calms down the body and restores restfulness to the body in order to preserve energy. It activates the digestion process, slows down our heart rate and breathing, decreases the amount of adrenaline being produced, and increases salivation.

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1. The difference between CNS and the PNS.
2. I know that the Brain and Spinal Cord.
3. I know there are 43 pair of Nerves.

What I need to learn
I Need to remember the technical name of the parts of the Nervous System.

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Nerves are the things that send a signal to our brain to react. Or use any of our 5 senses

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The nervous system is what makes us react to what is happening around us

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You have nerves throughout your body. When your body is injured it sends a message to your brain for you to feel pain

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There are structures that help the nerve impulses from the brain move around the body quicker. I’m not sure what they’re called (yet) but if you imagine dominos and rulers you can understand. If you stack the dominoes close together and tip them, they knock each other  down one by one in a few seconds. If, however you did it with rulers, it can move over 30 centimetres in one go per ruler instead of say 1cm per domino (bad explanation). These structures pass the impulses over longer distances then if they just ran down the nerve.
The send impulses from the brain to the body and back. That’s why you are paralysed if you break your neck; the brain can’t send impulses to that part of the body and that part of the body can’t send impulses to the brain.

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The nervous system is made up of a series of nerves through the body that send electric signals to the brain. The nervous system helps to direct movement, and alerts you to pain. It would be very dangerous to not have a nervous system, as it would be much easier to seriously injure ourselves, becaus we wouldn't feel anything, and would be unaware of the damage we were doing.

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The nervous system is the system of nerves in your body in which brain waves travel through to get to different muscles or parts of the body. It is also responsible for you being able to feel pain. There are also some functions in which autonomously make you do certain actions like if you touch something sharp, your body will make you jolt back before the brain even gets a signal.

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The nervous system is one of many systems in the human body. It consists of many nerves all linking to your brain sending signals. When they send signals to the brain it allows you to move all your muscles as it sends messages from your brain to your body parts.

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- the nervous system is a system in the body
- there are 100 billion neurons in the body
- nerves send signals to your brain to let you know if your injured
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The nervous system is to do with your brain and nerves. The nerves send signals to your brain to tell it how to move, feel or react. This allows us to feel objects/things, and allows us to move and continue with our everyday activities.

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- the nervous system is one of the many systems in the human body. The nervous system spreads through the whole body with a series of branches of nerves. It controls pain through its pain receptors located in nerves. Nerves send messages in the form of electric signals to the brain so we can feel pain and other sensations.

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The nervous system is one of the systems in the body. It coordinates actions by transmitting signals to different parts of the body. It is a complex system of cells and nerves.

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The nervous system sends signals to parts of your body to make you perform different functions

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The nervous system is the network of nerve fibres which sends impulses between the body. The impulses comes from the brain and is connected to the body, this helps us control our body.

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- the nervous system controls your movements
- it is comprised of nerves running all around your body ( Spinal cord )
- it is controlled by the brain that sends signals

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Nervous system is what controls your nerves. Your nerves connect to your spinal chord that then travels to your brain. Neveres help you touch, feel and move.

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- The nervous system sends signals to parts of your body
- Nervous system controls the body’s movement

- There are 2 main parts of the nervous system
- The central nervous system (CNS) is made of the spinal cord and brain
- The Peripheral Nervous System (PNS) is made of nerve cells all over the body
- The Peripheral Nervous System is split into 2 parts: somatic and autonomic
- Somatic is voluntary actions Eg. Moving
- Autonomic is involuntary actions Eg. Breathing, digestion

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It helps your brain make muscles move and sends signals around the body. The muscles also send nerve signals to the brain, nerves are what make your feel pain and other sensations.

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The nervous system is to do with nerves, the brain and the spinal cord.
It controls your body
Messages are sent between nerves and the brain, via the spinal cord to make something happen (eg, move your arm)

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-  nerves in your body send signals to your brain to tell your body how to move, feel etc

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The nervous system has to do with your body. It controls what you do and what you feel. It is made up of nerves all around your body. Your brain sends signals around your body.

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Nerves are made up of bundles of neutrons. They are specialised cells that carry messages to the brain. Most nerves connect to the spinal cord. The spinal cord acts like a highway for our nervous system. The spinal cord helps us send messages to the brain. Our brain controls the response. Other neutrons and nerves in a different positions make up the Peripheral Nervous System (PNS). The nervous system controls everything we think, do and feel. The Peripheral Nervous System has 2 parts/functions. The 2 different parts/functions of the PNS are the Somatic Nervous System and the Autonomic Nervous System. The Somatic Nervous System runs all of voluntary actions and a few of our involuntary actions. The Somatic Nervous System send information to the Centrak Nervous System (CNS), then receives the messages and allows us to make our muscles flex. Almost all our involuntary actions are done by the Autonomic Nervous System. The Autonomic Nervous System is always active. It’s even active when we are asleep. It makes sure our heart is always beating and we are always breathing. The Autonomic Nervous System is also I charge when we cough or sneeze and also when our pupils expand int the dark do we can see better.

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Nerves in your body

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•Controls your body

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The nervous system is a system in the human body. This particular system has many branching nerves that are all around your body. The branches let us feel when we are touching things (smooth,rough,bumpy). The main features of the nervous system that need to be working in order for in to work is the brain and the nerves. When ever you feel pain your nerves will send electromagnetic pulses to your brain and your brain will get your body to react to the pain. Most of the nerves in your body connect to your spinal cord which acts like Kwinanna freeway of your body

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The nervous system sends messages from our body using nerves that are made up of neutrons that carry messages to our brain.
Most nerves connect to your spinal cord that brings the message to your brain. Which makes out what it is and then gives a response, the messages then goes back down your spinal cord to your nerves and makes you do the action. The central nervous system includes your spinal cord and brain. The peripheral nervous system is made up of neutrons and nerves.

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Run through your body and tell your brain what to do

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The nervous system involves your body sending electrical signals to your brain telling it what it feels like and how it feels.

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The nervous system send signals to other parts of your body

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The nervous system sends messages to brain, eg touch

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The nervous system is everything to do with the brain and cells

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Nerves that carry messages from and to brain

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It sends signals to different parts of the body

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The brain stops growing at 21
You can feel pressure and objects

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It has to do with the brain

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It is to do with the brain,

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It has to do with your brain and how it works

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- The nervous system sends electrical signals to parts of the body allowing that part of the body to move.
- connected to the brain n
- often represented in the colour blue
- you feel the pressure of the object on your finger

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Your nervous system controls what your body does like walking, speaking and such things

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The brain controls most of the nervous system.

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the brain stops developing when you are 21

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Biology is to do with the body and the brain. The nervous system is in the brain and nerves.