reflex arc

• neurone


  A neurone is a nerve cell that carries electrical signals in the body. It helps the brain communicate with the rest of the body.
• sensory neurone


  a nerve cell that senses information like touch, temperature, or pain and sends it to the brain or spinal cord
• relay neurone


  a nerve cell found in the brain and spinal cord that passes messages between sensory neurones and motor neurones
• motor neurone


  a nerve cell that carries signals from the brain or spinal cord to muscles causing them to move or react
• human nervous system



  human nervous system is the body's messaging system that sends signals all over. (spinal cord & brain)
• reflex arc



  A reflex arc is the route taken by signals in a reflex, which is a quick and automatic action, like pulling your hand away from something hot.
• stimuli


  A stimuli is something that causes a reaction in your body. It could be anything like a loud noise, bright light, or touching something hot.
• receptor


  A receptor is a part of your body that senses things like heat, light, or pain.
• effector


  he effector is the part of the body that carries out the response. If you touch something hot, the muscles in your hand (the effector) contract, causing you to pull your hand away.
• response


  A response is the action your body takes after a stimulus is detected. It happens automatically and quickly.
• what is the order of the reflex arc


  stimuli > receptor > sensory neurone > synapse > relay neurone > synapse > motor neurone > effector > response
• synapse


  A synapse is a tiny gap between two neurons (nerve cells) where they communicate with each other. It’s the point where one neurone passes a signal to another.
• axon


  An axon is a long, thin extension of a neuron (nerve cell) that carries electrical impulses away from the cell body to other cells, such as other neurons, muscles, or glands.
• myelin sheath


  The myelin sheath is a fatty layer that wraps around the axon of many nerve cells. It acts like insulation on an electrical wire, helping to speed up the transmission of electrical signals along the axon.