A reflex arc is a neural pathway that connects the input nerve (sensory nerve) to the output nerve (motor nerve) at the point where they first meet. This connection allows for rapid and automatic responses to stimuli without the need for conscious thought.
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A reflex arc is a neural pathway that controls reflex actions, enabling rapid and involuntary responses to stimuli without involving conscious thought. It involves sensory neurons, interneurons in the spinal cord, and motor neurons. When a stimulus is detected, sensory neurons transmit signals directly to the spinal cord. Interneurons process the information, and motor neurons convey signals to effectors (muscles or glands), eliciting an immediate response. Bypassing higher brain centers reduces the time for signal processing, facilitating quick reactions to potential threats. Reflex arcs play a vital role in protecting the body by ensuring swift responses to various stimuli.