1. a muscle or gland that responds to a nerve signal and produces a physical effect or action
Usage: biology, physiology
2. a protein or molecule that binds to a receptor and triggers a biological response
Usage: biochemistry, molecular biology
3. a device or mechanism that produces motion or control in a system
Usage: engineering, robotics

Examples

• The muscle acts as an effector when the nervous system sends a signal to contract.
• In a reflex arc, the effector responds immediately without waiting for brain input.
• Hormones function as chemical effectors that trigger responses in target cells.
• The robot's motors are effectors that allow it to move and manipulate objects.
• When you touch a hot stove, your arm muscles are the effectors that pull your hand away.
• Glands are effectors that secrete substances like sweat or saliva in response to stimuli.