1. Nervous System By Mark de Jong, Alana Cribb-Williams, Sam Thompson & Charlotte Bonny

2. Contents What is the nervous system?? What is the nervous system?? What is the nervous system?? What is the nervous system?? Example of the Nervous system at work?? Example of the Nervous system at work??Example of the Nervous system at work??Example of the Nervous system at work?? How does the nervous system work? How does the nervous system work? How does the nervous system work? How does the nervous system work? So how does it pass along messages?? So how does it pass along messages?? So how does it pass along messages?? So how does it pass along messages?? So your nervous system is made up of… So your nervous system is made up of… So your nervous system is made up of… So your nervous system is made up of… Multiple Sclerosis Multiple Sclerosis Multiple Sclerosis Multiple Sclerosis

3. What is the Nervous System?? The Nervous System is made up of your brain, spinal cord and nerves and is the control centre for your entire body. With out it you could not possibly exist as it control everything you do. Such as moving, hearing, smelling, breathing and even things like thinking, dreaming and remembering. The Nervous System is made up of your brain, spinal cord and nerves and is the control centre for your entire body. With out it you could not possibly exist as it control everything you do. Such as moving, hearing, smelling, breathing and even things like thinking, dreaming and remembering. Back to contents

4. Example of the nervous system at work. If you put your hand on a hot stove the nerves in your skin send a message of pain to your brain. The brain then sends a message back telling the muscles in your hand to pull away. If you put your hand on a hot stove the nerves in your skin send a message of pain to your brain. The brain then sends a message back telling the muscles in your hand to pull away. Back to contents

5. How does the Nervous System work? The nervous system controls everything you do by sending messages back and forth from your brain to coordinate all of your actions and reactions. The nervous system controls everything you do by sending messages back and forth from your brain to coordinate all of your actions and reactions. Back to contents

6. Nerves are thin threads of nerve cells called neurons that run through out your body. They are all bundled together and send the messages to and from your brain to all the muscles in your body. Nerves are thin threads of nerve cells called neurons that run through out your body. They are all bundled together and send the messages to and from your brain to all the muscles in your body. There are two different types of nerves, Sensory nerves and Motor nerves. There are two different types of nerves, Sensory nerves and Motor nerves. Sensory nerves send messages to the brain where as Motor nerves transport messages from your brain. Sensory nerves send messages to the brain where as Motor nerves transport messages from your brain. Back to contents

7. So how does it pass along messages?? Neurons are shaped almost like stars and to varying degrees each point is stretched so that they have long fingers. Neurons are very thin some are very small and some can be 3 feet long. Neurons are shaped almost like stars and to varying degrees each point is stretched so that they have long fingers. Neurons are very thin some are very small and some can be 3 feet long. Nerves as mentioned before are long threads of neurons where the fingers of each neuron almost reach the fingers of a another. Nerves as mentioned before are long threads of neurons where the fingers of each neuron almost reach the fingers of a another. Back to contents

8. When a neuron is stimulated (by heat, a cold touch, sound vibrations or some other message) it generates a tiny electrical pulse. When a neuron is stimulated (by heat, a cold touch, sound vibrations or some other message) it generates a tiny electrical pulse. The electricity & chemical change travels the length of the neuron. When its gets to the finger- like point it needs help to get to the next neuron, so that’s where the chemicals come in. The electrical pulse in the cells triggers a release of chemicals that carry the pulse to the next cell and so goes until the message completes the length of the nerve and delivers the message. The electricity & chemical change travels the length of the neuron. When its gets to the finger- like point it needs help to get to the next neuron, so that’s where the chemicals come in. The electrical pulse in the cells triggers a release of chemicals that carry the pulse to the next cell and so goes until the message completes the length of the nerve and delivers the message. Back to contents

9. So the main components of are Nervous System are… The Brain The Brain The Brain The Brain The Spinal cord The Spinal cord The Spinal cord The Spinal cord Neurons Neurons Neurons Back to contents

10. The Brain The Brain is the command centre of your entire body and is made up of billions of neurons. Its role in the nervous system is to send messages down the motor nerves to all the muscles and glands in the body. The Brain is the command centre of your entire body and is made up of billions of neurons. Its role in the nervous system is to send messages down the motor nerves to all the muscles and glands in the body. Back to contents

11. The Spinal Cord The Spinal Cord is a tube neurons that runs up your spine ands attaches to your brain stem. All nerves spread out from the spinal cord and some message are even processed in the spinal cord but most message are sent to the brain. It is the main highway of nerves. The Spinal Cord is a tube neurons that runs up your spine ands attaches to your brain stem. All nerves spread out from the spinal cord and some message are even processed in the spinal cord but most message are sent to the brain. It is the main highway of nerves. Back to contents

12. Neurons Neurons are the cells that make up nerves. They carry the messages. Neurons are the cells that make up nerves. They carry the messages. There are two types of nerves: There are two types of nerves: Sensory nerves which send the messages to the brain from all the muscles and glands in your body. Motor nerves which send messages from your brain to all the muscle and glands in your body. Back to contents

13. Multiple Sclerosis - The Basics Multiple Sclerosis is an autoimmune disease, this means that the immune system attacks a vital component of your body. Multiple Sclerosis is an autoimmune disease, this means that the immune system attacks a vital component of your body. Multiple Sclerosis can be caused by a genetic predisposition that means when exposed to a virus or toxin your immune system attacks the myelin. The myelin protects and speeds up messages that are sent around the body. When attacked it slows down nerve impulses and eventually stops messages altogether causing death. This means it is a progressive disease. Multiple Sclerosis can be caused by a genetic predisposition that means when exposed to a virus or toxin your immune system attacks the myelin. The myelin protects and speeds up messages that are sent around the body. When attacked it slows down nerve impulses and eventually stops messages altogether causing death. This means it is a progressive disease. Back to contents

14. Multiple Sclerosis – In Depth Multiple Sclerosis is a Multiple Sclerosis is basically inflammation of the brain and spinal cord. It is a disease of the tissue matter. This tissue is made up of nerve fibers which are responsible for sending communication signals within and between the Central Nervous System (CNS), and the nerves supplying the rest of the body. Neurons and white tissue are most likely to be attacked in MS. During periods of MS activity white blood cells (leukocytes) are drawn to regions of the white matter. These initiate and take part in what is known as the inflammatory response. The resulting inflammation is similar to what happens in your skin when you get a pimple. Multiple Sclerosis is a Multiple Sclerosis is basically inflammation of the brain and spinal cord. It is a disease of the tissue matter. This tissue is made up of nerve fibers which are responsible for sending communication signals within and between the Central Nervous System (CNS), and the nerves supplying the rest of the body. Neurons and white tissue are most likely to be attacked in MS. During periods of MS activity white blood cells (leukocytes) are drawn to regions of the white matter. These initiate and take part in what is known as the inflammatory response. The resulting inflammation is similar to what happens in your skin when you get a pimple. Back to contents

15. Credits By Allama, Muffin, Sambo & Mark DEgong By Allama, Muffin, Sambo & Mark DEgong With special thanks to Ned With special thanks to Ned