Content:<br />The nervous system is responsible for controlling all bodily activities, such as movement, sensation, thought, and heartbeat.<br />Its Divisions:<br />Central Nervous System: Consists of the brain and spinal cord.<br />Peripheral Nervous System: Consists of the nerves that extend from the brain and spinal cord to the rest of the body.<br />⚡️ 2. How Do Nerves Work?<br />Content:<br />Nerves act like electrical wires, transmitting messages in the form of electrical signals to and from the brain.<br />Example:<br />When you touch something hot, the skin nerves send a signal to the brain, and the brain sends a command to your hand to move away quickly.<br />🧩 3. Types of Nerves in the Human Body<br />Content:<br />Sensory Nerves: Transmit information from the senses (skin, eyes, ears) to the brain.<br />Motor Nerves: Transmit commands from the brain to the muscles for movement.<br />Mixed Nerves: Transmit both sensory and motor signals.<br /> 4. Neurons<br />Content:<br />Neurons are the basic units of the nervous system. They consist of:<br />Cell body<br />Dendrites (receive signals)<br />Axon (transmit signals to other cells)<br />5. The Brain: The Supreme Commander of the Nervous System<br />Content:<br />The cerebrum: Responsible for thinking, memory, and movement.<br />The cerebellum: Helps with balance and coordination of movements.<br />The medulla oblongata: Controls breathing and heartbeat.<br />6. Diseases of the Nervous System<br />Content:<br />Epilepsy: A disorder of electrical activity in the brain.<br />Paralyze: Loss of the ability to move a part of the body due to nerve damage.<br />Multiple sclerosis: A disease in which the body itself attacks the nerves.<br />7. How can we maintain healthy nerves?<br /> Content:<br />Eat a healthy diet (rich in vitamin B)<br />Avoid stress<br />Exercise<br />Get good sleep<br />Avoid drugs and smoking<br />Al _ Mustaqbal University, the first university in Iraq<br />Prepared by: Shahad Nawras Abbas<br />