Sensory input → brain analysis → motor output → muscle contraction.
1. Which set lists the three main components of the nervous system?
2. What is the main role of a nerve in the nervous system?
3. In a sensory pathway, where does the nerve message travel first after a receptor detects a signal?
Nervous system components
Includes brain, spinal cord, and nerves.
Sensory-motor pathway — role?
Transmits signals from receptors to brain and back to muscles.
Nervous system components
Brain, spinal cord, nerves
Function of spinal cord
Relays messages between brain and body
Neuron structure roles
Receives, processes, and transmits nerve signals
Neural networks
Connected neurons that process information
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