Reflexes
A reflex is a fast, automatic response to a stimulus that happens without our deciding or thinking: pulling a hand off something hot, blinking, sneezing, coughing, tears, the knee jerk. Most protect the body. In a reflex like pulling the hand away, the message goes along a sensory nerve to the spinal cord, which sends an order straight back along a motor nerve to the muscle, before the message reaches the cerebrum; the spinal cord is the centre of many reflexes, and the brain stem of others.
Depth 1 · Foundation
You can say what makes a response a reflex, give examples and why they matter, and follow the short path of a spinal reflex from receptor to muscle.
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You can say what makes a response a reflex, give examples and why they matter, and follow the short path of a spinal reflex from receptor to muscle.
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