What Is a Reflex Arc?

Reflex arc refers to a specific neural structure that performs reflex activities. Receive information from peripheral receptors, pass the afferent nerve, pass the information to the nerve center, and then send the response information back to the peripheral effector. It is essentially a special connection structure between neurons. The typical model is generally composed of five parts: receptor, afferent nerve, nerve center, efferent nerve and effector. ^[1]

In short, the reflection process proceeds as follows: a certain stimulus according to a certain

In the overall case, when reflex activity occurs, a sensory impulse is introduced into or through the spinal cord

(1) Divergent: Axons of one neuron can establish synaptic connections with many different neurons;

(2) Aggregation: the cell body and dendrites of a neuron receive synaptic connections with many different neurons

(3) Chain-like: neuron chain-like succession. Due to the complexity of the structure of neurons in the central nervous system and the connections between neurons, various reflex activities can be coordinated with each other, coordinated and performed accurately.