A ganglion is a nerve cell cluster whose primary function is to act as a junction or relay point in the nervous system between to differing neurological structures. For example, there is a ganglia cluster in the wrist that connects the digital nerves to the brachial nerves and transmits sensory information from the hands to the pathways in the arm.
The segmental ganglia is part of the nerves system. Ganglia's are paired and connect all the way down the nerve chord.
Ganglions are part of the autonomic nervous system and are used to elicit or inhibit an effector organ.
There is preganglion and post ganglion cells.
detect variations in light and darkness
Dorsal root ganglion
A dorsal root ganglion is a nodule on the dorsal root of the spinal cord, and contains the cell bodies of neurons that are afferent. Afferent neurons collect sensory signals from the body and send them to various divisions of the brain.
Sensory. Large diameter sensory neurons populate the medial division of the DRG and convey information regarding proprioception, localized touch, and vibration. In the lateral part of the DRG, small diameter sensory neurons conveying information about pain and temperature.
Autonomic ganglia contain the cell bodies of motor neurons.
Rods and cones are connected by synapses to bipolar cells, which, in turn, communicate with neurons called ganglion cells.
Bipolar neurons in the ciliary ganglion only exist during embryonic development and in vitro. Adult in vivo choroid and ciliary neurons in the ciliary ganglion are all unipolar.
Sensory neurons traveling through the dorsal root ganglion (DRG) are pseudounipolar neurons.
Unipolar neurons are found in ganglion outside the CNS.
Post synaptic neurons
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Dorsal root ganglion
Satellite cells
ganglion
A dorsal root ganglion is a nodule on the dorsal root of the spinal cord, and contains the cell bodies of neurons that are afferent. Afferent neurons collect sensory signals from the body and send them to various divisions of the brain.
Sensory. Large diameter sensory neurons populate the medial division of the DRG and convey information regarding proprioception, localized touch, and vibration. In the lateral part of the DRG, small diameter sensory neurons conveying information about pain and temperature.
satellite cell.
You have a really good question. Studying the nervous system can be overwhelming and quit confusing. Preganglionic Neurons come from the CNS to the Ganglion ( mass of neuron cell bodies and dendrites) and Postganglionic neurons leave the ganglion and head toward the effector organ ( smooth muscle, glands, etc..).