Pseudounipolar cells (Pseudo- false, uni- one) are sensory neurons in the peripheral nervous system. These neurons contain a long dendrite and a small axon that connects to the spinal cord. Neurons (also called nerve cells) are the primary cells of the nervous system. ... (The term dendrite may also refer to the metallurgical dendrite. ... An axon, or nerve fibre, is a long slender projection of a nerve cell, or neuron, which conducts electrical impulses away from the neurons cell body or soma. ...
Anatomy
The dendrite of these neurons are located in the nerves coming from the body. The cell bodies are located in the dorsal root ganglion just next to the spinal cord. The axons protrude through the dorsal root and into the posterior horn of the spinal cord. A nerve is an enclosed, cable-like bundle of nerve fibers or axons, which includes the glia that ensheath the axons in myelin. ... In anatomy and neurology, the dorsal root ganglion is a nodule on a dorsal root that contains cell bodies of afferent spinal nerve neurons. ... The posterior horn of the spinal cord is caudal (more towards the back/tail) to the anterior horn. ...
Signal Pathway
The signal is conducted through the nerve (dendrite) to the dorsal root ganglion (cell body), then through the dorsal root (axon) ending at the sensory nuclei in the posterior horn of the spinal cord.
Neurons communicate with one another and to other cells through synapses, where the axon tip of one cell impinges upon a dendrite or soma of another, or less commonly to an axon.
There are far more glial cells than neurons, and recent experimental results have suggested that glial cells play a vital role in information processing among neurons.
The cell body of a neuron is supported by a complex meshwork of structural proteins called neurofilaments, which are assembled into larger neurofibrils.
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