Question

how do effectors cause action

Answer 1

When a motor nerve impulse sent by the spinal cord (or brain) reaches theeffector organs (which are muscles), then the muscles cause action or movement (such as lifting the hand away from a hot plate). We will now describe how muscles are able tomove in response to electrical nerve impulses and cause action.

Answer 2

When a motor impulse sent by the brain reaches the effectors organ then the muscle cause action or movement.