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The solitary nucleus (SN) (nucleus of the solitary tract, nucleus solitarius, or nucleus tractus solitarii) is a series of neurons whose cell bodies form a roughly vertical column of grey matter in the medulla oblongata of the brainstem. Their axons form the bulk of the enclosed solitary tract. The solitary nucleus can be divided into different ...
The solitariospinal tract is a descending nerve tract that controls breathing by promoting the action of inspiratory muscles (note that exhalation is usually passive [1]).It consists of a small group of axons originating in the nucleus solitarius of the medulla oblongata, and projects to the motor neurons of the phrenic nerve (which innervate the thoracic diaphragm) and of motor neurons of the ...
The tongue contains taste receptors, that sends sensory information via action potential to the solitary nucleus. Then, such signal is directed towards the gustatory nucleus, which is located within the Thalamus. [12] Topography on the tongue doesn't determine the arrangement and processing of input within this nucleus.
Parabrachial Kolliker-Fuse nucleus [20] Only augmenting expiratory neurons of BötC, which are exclusively glycinergic, project to the phrenic nucleus. [21] [14] Projections to the Bötzinger complex include the nucleus tractus solitarii (NTS) [22] [23] the DRG and the VRG. [24]
The area postrema connects to the solitary nucleus, or nucleus tractus solitarii (NTS), and other autonomic control centers in the brainstem.It is excited by visceral afferent impulses (sympathetic and vagal) arising from the gastrointestinal tract and other peripheral trigger zones, and by humoral factors. [2]
The solitary tract (tractus solitarius or fasciculus solitarius) is a compact fiber bundle that extends longitudinally through the posterolateral region of the medulla oblongata. The solitary tract is surrounded by the solitary nucleus, and descends to the upper cervical segments of the spinal cord. It was first named by Theodor Meynert in 1872.
In neuroanatomy, a nucleus (pl.: nuclei) is a cluster of neurons in the central nervous system, [1] located deep within the cerebral hemispheres and brainstem. [2] The neurons in one nucleus usually have roughly similar connections and functions. [ 3 ]
Cell nucleus: A cell's information center, the cell nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes , and is the place where almost all DNA replication and RNA synthesis ( transcription ) occur.