Dorsal column nuclei
Dorsal Column Nuclei
The Dorsal Column Nuclei (pronunciation: /ˈdɔːrsəl ˈkɒləm ˈnjuːkliːaɪ/) are a group of neurons located in the dorsal column of the spinal cord. They are part of the dorsal column-medial lemniscus pathway, which is responsible for transmitting fine touch and proprioceptive information from the body to the brain.
Etymology
The term "Dorsal Column Nuclei" is derived from the Latin words "dorsum" meaning back, "columna" meaning column, and "nucleus" meaning kernel or core. This refers to their location in the back part of the spinal cord and their function as a core part of the sensory pathway.
Function
The Dorsal Column Nuclei consist of two main nuclei: the cuneate nucleus and the gracile nucleus. These nuclei receive sensory information from the body, such as touch and proprioception, and transmit this information to the brain via the medial lemniscus.
Related Terms
- Cuneate Nucleus: One of the two main nuclei in the Dorsal Column Nuclei. It receives sensory information from the upper body.
- Gracile Nucleus: The other main nucleus in the Dorsal Column Nuclei. It receives sensory information from the lower body.
- Medial Lemniscus: The pathway through which the Dorsal Column Nuclei transmit sensory information to the brain.
- Proprioception: The sense of the relative position of one's own parts of the body and strength of effort being employed in movement.
- Neuron: A nerve cell that is the basic building block of the nervous system.
External links
- Medical encyclopedia article on Dorsal column nuclei
- Wikipedia's article - Dorsal column nuclei
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