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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.
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 subparabrachialnucleus and lateral crescent send efferents to the nucleus of the solitary tract, ventrolateral medulla, and spinal cord, where they target many respiratory and autonomic cell groups. [3] Many of these same brainstem and forebrain areas send efferents back to the parabrachial nucleus as well. [7] [5]
The solitary nucleus is the end-point for sensory information arriving from the pontine respiratory group, and from two cranial nerves – the vagus nerve, and the glossopharyngeal nerve. The solitary nucleus sends signals to the respiratory center from peripheral chemoreceptors , baroreceptors , and other types of receptors in the lungs in ...
To produce the sense of taste, these neurons project to the gustatory nucleus, or the rostral and lateral regions of the nucleus of the solitary tract, and are ultimately projected to the cerebral cortex. [3] The tongue contains taste receptors, that sends sensory information via action potential to the solitary nucleus.
The chorda tympani nerve carries its information to the nucleus of solitary tract, and shares this area with the greater petrosal, glossopharyngeal, and vagus nerves. [8] When the greater petrosal and glossopharyngeal nerves are cut, regardless of age, the chorda tympani nerve takes over the space in the terminal field.
De vita solitaria ("Of Solitary Life" or "On the Solitary Life"; translated as The Life of Solitude) is a philosophical treatise composed in Latin and written between 1346 and 1356 (mainly in Lent of 1346) by Italian Renaissance humanist Petrarch. It constitutes an apology of solitude dedicated to his friend Philippe de Cabassoles. [1] [2]
This info is processed separately (nearby) in the rostral lateral subdivision of the nucleus of the solitary tract (NST). The NST receives input from the amygdala (regulates oculomotor nuclei output), bed nuclei of stria terminalis, hypothalamus, and prefrontal cortex. The NST is the topographical map that processes gustatory and sensory (temp ...