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Transcript
The Nervous System • Receives information • Responds to information • Maintains homeostasis Neuron • Nerve cell that carries nerve impulses Here’s how it goes: • 1. Receptors in sensory neurons pick up stimuli • 2. The impulse then travels from the sensory neuron across the synapse, where a chemical reaction occurs, to the association/interneuron • Here is where the brain usually gets involved and interprets the impulses and make you realize what is going on • 3. The impulse then travels across a synapse, where a chemical reaction occurs, to the motor neuron • 4. The motor neuron sends the message to the muscles to carry out your response. • Let’s look at a reflex action where the brain is the last to know …
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