Information about Ganglion
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This is a dorsal root ganglion (DRG) from a chicken embryo (around stage of day 7) after incubation overnight in NGF growth medium stained with anti-neurofilament antibody. You can see the axons growing out of the ganglion.
In anatomy, a ganglion (pl. ganglia) is a tissue mass, which is composed mainly of somata and dendritic structures, which often interconnect with each other to form a complex system of ganglia known as a plexus. These structures provide relay points and intermediary connections between different neurological structures in the body, such as the peripheral and central nervous systems.
There are two major groups of ganglia: dorsal root ganglia (also known as the spinal ganglia) and autonomic ganglia. The former contains the cell bodies of sensory (afferent) nerves and the latter contains the cell bodies of autonomic nerves.
In the autonomic nervous system, fibers from the central nervous system to the ganglion are known as preganglionic fibers, while those from the ganglion to the effector organ are called postganglionic fibers.
See also
Anatomy (from the Greek ἀνατομία anatomia, from ἀνατέμνειν
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Biological tissue is a collection of interconnected cells that perform a similar function within an organism.
The study of tissue is known as histology, or, in connection with disease, histopathology.
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The study of tissue is known as histology, or, in connection with disease, histopathology.
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The soma, or perikaryon, is the bulbous end of a neuron, containing the cell nucleus. It is also known as the cell body. The word soma is Greek, meaning "body"; the soma of a neuron is often called the "cell body".
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For the dendritic crystal structure, see .
Dendrites (from Greek dendron, “tree”) are the branched projections of a neuron that act to conduct the electrical stimulation received from other neural cells to the cell body, or
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A plexus is a network. It has more specific meanings in multiple fields.
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Biology
In biology it has multiple meanings.Nervous system
In many animals the processes of neurons join together to form a plexus or nerve net...... Click the link for more information.
The Peripheral nervous system resides or extends outside the "CNS" central nervous system (the brain and spinal cord) to serve the limbs and organs. Unlike the central nervous system, however, the PNS is not protected by bone, leaving it exposed to toxins and mechanical injuries.
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The central nervous system (CNS) represents the largest part of the nervous system, including the brain and the spinal cord. Together with the peripheral nervous system, it has a fundamental role in the control of behavior.
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In anatomy and neurology, the dorsal root ganglion (or spinal ganglion) is a nodule on a dorsal root that contains cell bodies of neurons in afferent spinal nerves.
The axons of dorsal root ganglion neurons are known as afferents.
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The axons of dorsal root ganglion neurons are known as afferents.
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Autonomic ganglia are clusters of neuronal cell bodies and their dendrites and are essentially a junction between autonomic nerves originating from the central nervous system and autonomic nerves innervating their target organs in the periphery.
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afferent neurons--otherwise known as sensory or receptor neurons--carry nerve impulses from receptors or sense organs toward the central nervous system. This is the case vice versa as well. This term can also be used to describe relative connections between structures.
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A nerve is an enclosed, cable-like bundle of axons (the long, slender projection of a neuron). Neurons are sometimes called nerve cells, though this term is technically imprecise since many neurons do not form nerves, and nerves also include the glial cells that
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autonomic nervous system (ANS) (or visceral nervous system) is the part of the peripheral nervous system that acts as a control system, maintaining homeostasis in the body. These maintenance activities are primarily performed without conscious control or sensation.
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autonomic nervous system (ANS) (or visceral nervous system) is the part of the peripheral nervous system that acts as a control system, maintaining homeostasis in the body. These maintenance activities are primarily performed without conscious control or sensation.
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The central nervous system (CNS) represents the largest part of the nervous system, including the brain and the spinal cord. Together with the peripheral nervous system, it has a fundamental role in the control of behavior.
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preganglionic fibers.
All preganglionic fibers, whether they are in the sympathetic division or in the parasympathetic division, are cholinergic (that is, these fibers uses acetylcholine as their neurotransmitter).
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All preganglionic fibers, whether they are in the sympathetic division or in the parasympathetic division, are cholinergic (that is, these fibers uses acetylcholine as their neurotransmitter).
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postganglionic fibers.
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Neurotransmitters
The neurotransmitters used for postganglionic fibers differ:- In the parasympathetic division, they are cholinergic (that is, they use acetylcholine as their neurotransmitters.
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In anatomy and neurology, the dorsal root ganglion (or spinal ganglion) is a nodule on a dorsal root that contains cell bodies of neurons in afferent spinal nerves.
The axons of dorsal root ganglion neurons are known as afferents.
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The axons of dorsal root ganglion neurons are known as afferents.
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Location Varies by type
Function Varies but often excitatory projection
Morphology Varies
A ganglion cell (more correctly, a retinal ganglion cell) is a type of neuron typically located near the inner surface of the retina of the eye that
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Function Varies but often excitatory projection
Morphology Varies
A ganglion cell (more correctly, a retinal ganglion cell) is a type of neuron typically located near the inner surface of the retina of the eye that
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ganglion cyst (also known as a bible bump) is a swelling that often appears on or around joints and tendons in the hand or foot. The size of the cyst can vary over time, often becoming more inflamed if irritated.
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nervous system of an animal coordinates the activity of the muscles, monitors the organs, constructs and also stops input from the senses, and initiates actions. Prominent parts of a nervous system include neurons and nerves, which are used in coordination.
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Neurons (also known as neurones and nerve cells) are electrically excitable cells in the nervous system that process and transmit information. In vertebrate animals, neurons are the core components of the brain, spinal cord and peripheral nerves.
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