Page 182 - The Miracle of Hormones
P. 182
Pain impulse
Pain-transmitting
neuron
Endorphin-containing
neuron
Opiate
receptor sites
Mitochondrion
Vesicles containing
substance P
Endorphins
Synapse
Receptor sites If we receive an injury in a part of our body, the
for substance P brain is notified of this pain through a mes-
sage.. In response to this message, a special
Receiving neuron in spinal cord neuron located in the brain and the spinal col-
umn reduces the pain by secreting endorphins.
