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词汇 Axon reflex
分类 英语词汇 英语翻译词典
释义

Axon reflex

英语百科

Axon reflex

A flow map of the axon reflex. Stimulation of the axon can cause electric flow to all effector tissues the neuron innervates, as well as back to the soma of the neuron; this is distinct from a normal neuron firing only down the axon.
A normal spinal cord reflex arc, whereas the axon reflex would bypass the interneuron. This distinction is important because eerly researchers had to differentiate between the spinal cord reflex and the axon reflex to understand the body's response to stimuli.
Vasoconstriction and vasodilation, an effect that can be caused from axon reflex stimulation in certain tissues, demonstrated compared to the normal blood vessel.

The axon reflex (or the flare response) is the response stimulated by peripheral nerves of the body that travels away from the nerve cell body and branches to stimulate target organs. Reflex's are single reactions that respond to a stimulus making up the building blocks of the overall signaling in the body's nervous system. Neurons are the excitable cells that process and transmit these reflex signals through their axons, dendrites, and cell bodies. Axons directly facilitate intercellular communication projecting from the neuronal cell body to other neurons, local muscle tissue, glands and arterioles. In the axon reflex, signaling starts in the middle of the axon at the stimulation site and transmits signals directly to the effector organ skipping both an integration center and a chemical synapse present in the spinal cord reflex. The impulse is limited to a single bifurcated axon, or a neuron whose axon branches into two divisions, and does not cause a general response to surrounding tissue.

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