Nucleus (neuroanatomy)
Nucleus (neuroanatomy)
The nucleus (pronunciation: /ˈnjuː.kli.əs/) in neuroanatomy refers to a cluster of neurons in the central nervous system.
Etymology
The term "nucleus" is derived from the Latin word 'nucleus' or 'nuculeus', meaning 'little nut' or 'kernel'. In neuroanatomy, it was first used in the 18th century to describe the visibly distinct areas of grey matter in the brain.
Definition
In the context of neuroanatomy, a nucleus is a collection of neurons in the brain and spinal cord that are functionally and anatomically linked. These clusters of neurons are often interconnected, forming the basis for neural networks that facilitate various bodily functions and processes.
Function
The function of a nucleus in neuroanatomy varies depending on its location and the neural network it is part of. Some nuclei are involved in basic bodily functions such as heart rate and respiration, while others play a role in complex cognitive processes like memory and emotion.
Related Terms
- Neuron: The basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells.
- Central Nervous System: The part of the nervous system consisting primarily of the brain and spinal cord.
- Neural Network: A series of interconnected neurons whose activation defines a recognizable linear pathway.
- Grey Matter: A major component of the central nervous system, consisting of neuronal cell bodies, neuropil (dendrites and myelinated as well as unmyelinated axons), glial cells (astrocytes and oligodendrocytes), synapses, and capillaries.
See Also
External links
- Medical encyclopedia article on Nucleus (neuroanatomy)
- Wikipedia's article - Nucleus (neuroanatomy)
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