NEUROGLIAL CELL Meaning and
Definition
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Neuroglial cells, also known as glial cells or simply glia, refer to a diverse group of non-neuronal cells that reside in the central nervous system (CNS) and peripheral nervous system (PNS). Their main function is to provide support and protection to the neurons, the specialized cells responsible for transmitting and processing signals in the nervous system. The term "neuroglia" is derived from the Greek words "neuron" (nerve) and "glia" (glue), indicating their role in maintaining the structural integrity of the nervous tissue.
Neuroglial cells are more numerous than neurons, accounting for approximately 50% of the cells in the brain. They include several types, such as astrocytes, oligodendrocytes, microglia, and ependymal cells, each with distinct characteristics and functions. Astrocytes, for instance, contribute to the maintenance of the blood-brain barrier and play a crucial role in nutrient supply and waste removal. Oligodendrocytes provide structural support and create the myelin sheath, a fatty layer that insulates neuronal axons and enables efficient signal conduction. Microglia act as immune cells, protecting the CNS by removing debris and defending against pathogens. Ependymal cells line the fluid-filled spaces within the CNS and assist in cerebrospinal fluid circulation.
In summary, neuroglial cells are a vital component of the nervous system, serving essential roles in supporting and protecting neurons, maintaining homeostasis, and promoting efficient neuronal function.
Common Misspellings for NEUROGLIAL CELL
- beuroglial cell
- meuroglial cell
- jeuroglial cell
- heuroglial cell
- nwuroglial cell
- nsuroglial cell
- nduroglial cell
- nruroglial cell
- n4uroglial cell
- n3uroglial cell
- neyroglial cell
- nehroglial cell
- nejroglial cell
- neiroglial cell
- ne8roglial cell
- ne7roglial cell
- neueoglial cell
- neudoglial cell
- neufoglial cell
Etymology of NEUROGLIAL CELL
The word "neuroglial" is derived from two Greek root words: "neuro", meaning nerve, and "glia", meaning glue. The term was coined by the German anatomist Rudolf Virchow in the 19th century to describe the non-neuronal cells found in the brain and spinal cord. These cells were originally thought to function merely as a supportive glue-like structure for the neurons (nerve cells). However, over time, it has been discovered that neuroglial cells play a crucial role in various brain functions, including providing physical and nutritional support to neurons, modulating neuronal activity, and participating in immune responses in the central nervous system.
