GANGLIA Meaning and
Definition
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Ganglia are clusters or groups of nerve cells found in the peripheral nervous system (PNS) and sometimes in the central nervous system (CNS). These ganglia are primarily responsible for receiving and transmitting signals within the nervous system.
In the PNS, ganglia are commonly observed as small, spherical structures located outside the brain and spinal cord. They play a crucial role in coordinating and integrating sensory and motor information. Sensory ganglia, such as the dorsal root ganglia, receive sensory information from various parts of the body and transmit it to the CNS. Motor ganglia, also known as autonomic ganglia, receive signals from the CNS and relay them to effector organs, such as muscles or glands, enabling various involuntary functions of the body.
Ganglia contain a large number of nerve cell bodies called neurons, which are interconnected through networks of specialized connections known as synapses. These synapses allow ganglia to process and transmit information. Ganglia are rich in neurotransmitters and have the capability to modify signal strength and propagation, enabling complex neural signaling and integration.
The term "ganglia" can also refer to specific groups of neurons within the CNS known as basal ganglia, which are involved in regulating movement and the coordination of certain behaviors. The organization, structure, and function of ganglia can vary depending on their location, but they are key components of the nervous system's ability to process and relay information.
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A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for GANGLIA
Etymology of GANGLIA
The word "ganglia" derives from the classical Latin term "ganglion", which means a swelling or a tumor. "Ganglion" in turn traces back to the ancient Greek word "gánglion", with a similar meaning. The Greek term ultimately originated from the Proto-Indo-European root "*gʷelH-" or "*gel-" meaning "lump" or "knot". In modern usage, "ganglia" refers to clusters of nerve cells or nerve tissue found in the peripheral nervous system.
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