An illustration that shows the mechanism of an opioid action. It shows two neurons one on the left and one in the center connected by a network of neurons. The neurons are shown in blue and green colors. On the right side of the image there is a diagram that explains the mechanism. The diagram shows the neurons in the presence of an Opioid which is a type of nerve cell that is responsible for the release of neurotransmitters in the body. The neuron on the right is shown as a blue sphere with a red circle in the middle representing the neurotransmitter. The red circle represents the receptor while the blue sphere represents a receptor. There are also several neurons connected to the receptors which are represented by green and yellow dots. These neurons are responsible for regulating the flow of neurotransmitter signals and signaling signals in the brain. The image also shows how the receptors interact with the receptors and how they interact with each other. The text on the image explains that the mechanism can be used to control the expression of the receptor and how it interacts with other receptors.

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