Pain signals are electrical impulses sent by the nervous system to the brain, indicating tissue damage or potential harm.
Pain Signals cheat sheet for homework
Natural or synthetic substances that bind to opioid receptors in the brain and spinal cord, reducing pain signals.
The theory that suggests that the spinal cord contains a neurological 'gate' which can either block or allow pain signals to pass through to the brain.
Specialized sensory receptors that detect and transmit information about painful stimuli to the brain.