Pseudounipolar neuron

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Pseudounipolar_bipolar_neurons.svg

Pseudounipolar neuron

A pseudounipolar neuron is a type of neuron which has a single axon that divides into two branches: one that extends to the periphery and another that extends to the central nervous system. This unique structure allows pseudounipolar neurons to transmit sensory information from the periphery to the central nervous system efficiently.

Structure[edit | edit source]

Pseudounipolar neurons are characterized by their single axon that bifurcates into two distinct branches. The cell body of these neurons is typically located in the dorsal root ganglion or the cranial nerve ganglion. The peripheral branch of the axon extends to the sensory receptors in the skin, muscles, and joints, while the central branch enters the spinal cord or brainstem to synapse with other neurons.

Function[edit | edit source]

The primary function of pseudounipolar neurons is to convey sensory information from the periphery to the central nervous system. They are involved in transmitting various types of sensory stimuli, including touch, pain, temperature, and proprioception. The unique structure of pseudounipolar neurons allows for rapid and efficient transmission of sensory signals.

Development[edit | edit source]

During embryonic development, pseudounipolar neurons originate from the neural crest. Initially, these neurons are bipolar, with two separate processes. However, as development progresses, the two processes converge and fuse to form a single axon that bifurcates into the peripheral and central branches.

Clinical Significance[edit | edit source]

Pseudounipolar neurons play a crucial role in the sensory pathways of the nervous system. Damage or dysfunction of these neurons can lead to sensory deficits and neuropathic pain. Conditions such as diabetic neuropathy, herpes zoster, and traumatic nerve injury can affect pseudounipolar neurons, leading to clinical symptoms.

See also[edit | edit source]

References[edit | edit source]



External links[edit | edit source]


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