Reflex arc

• The sensory neuron carries the electrical signal from the receptor to the spinal cord or brain.
• Motor neurons carry impulses away from the CNS to effectors such as muscles or glands.
• Sensory neurons carry information about the stimulus away from the receptor towards the central nervous system (CNS).
• Receptors are sensory cells that detect stimuli, such as light or sound waves.
• The reflex arc is the pathway by which an impulse travels from receptor to effector.
• The motor neuron carries the electrical signal from the spinal cord or brain to the effector, which produces a response.
• The reflex arc is an automatic response to a stimulus that bypasses conscious control.
• A reflex is an automatic response to a specific stimulus without conscious thought.
• Reflexes involve three types of neurons: sensory neurons, interneurons, and motor neurons.
• Simple reflexes involve only one synapse between the sensory neuron and the motor neuron.