What is the nucleus of the solitary tract?
The nucleus of the solitary tract (NST) is a major sensory nucleus in the dorsal medulla that receives cardiovascular, visceral, respiratory, gustatory, and orotactile information [1,2].
What is the function of the nucleus of the solitary tract?
The nucleus of the solitary tract (solitary nucleus, nucleus tractus solitarii [NTS]), located in the dorsomedial medulla, is the first relay station for general visceral and taste afferents carried by the cranial nerves and has a critical role in the initiation and integration of a wide variety of reflexes controlling …
Why is it called nucleus of the solitary tract?
The solitary tract is surrounded by the nucleus of the solitary tract, and descends to the upper cervical segments of the spinal cord. It was first named by Theodor Meynert in 1872….
|Anatomical terms of neuroanatomy|
Where does the solitary nucleus project to?
In addition to projections from the solitary nucleus to ambiguus, dorsal vagal, and medullary nuclei, solitary neurons also project both to the reticular formation and to the thalamus.
What is NTS Respiratory?
The nucleus tractus solitarii (NTS) relays information from primary visceral receptors to the central nervous system and is critically involved in the reflex control of autonomic functions.
Which nucleus receives impulses of taste?
Anatomical terms of neuroanatomy The gustatory nucleus is the rostral part of the solitary nucleus located in the medulla. The gustatory nucleus is associated with the sense of taste and has two sections, the rostral and lateral regions.
What is the nucleus ambiguus made of?
The nucleus ambiguus is a group of large motor neurons, situated deep in the medullary reticular formation. The nucleus ambiguus contains the cell bodies of nerves that innervate the muscles of the soft palate, pharynx, and larynx which are strongly associated with speech and swallowing.
What is a nucleus nerve anatomically speaking?
In neuroanatomy, a nucleus (plural form: nuclei) is a cluster of neurons in the central nervous system, located deep within the cerebral hemispheres and brainstem. In anatomical sections, a nucleus shows up as a region of gray matter, often bordered by white matter.
What is a Tastant?
A tastant is a water-soluble chemical that produces a taste sensation by activating taste receptor cells (TRCs) and producing activity in taste-related pathways (see Taste) in the nervous system.
Where is the nucleus of the solitary tract?
The nucleus of the solitary tract (solitary nucleus, nucleus tractus solitarii [NTS]), located in the dorsomedial medulla, is the first relay station for general visceral and taste afferents carried by the cranial nerves and has a critical role in the initiation and integration of a wide variety of reflexes controlling cardiovascular function,
Where does sensory input come from in the solitary nucleus?
Sensory input from the subdiaphragmatic parts of the gastrointestinal system (via CN X) is transmitted to the caudal part of the solitary nucleus.
How is the solitary tract related to the NST?
The solitary tract contains all the axons of the cranial nerves that provide input to the NST from the periphery. Thus, afferent axons from cranial nerves VII, IX, and X all travel in the tract and give off terminal branches that synapse in the NST.
Where does the solitary tract nucleus receive taste fibers?
The solitary tract nucleus receives taste fibers from the tongue base while the spinal nucleus of CNV receives sensation from the soft palate, tongue base, and pharynx. Axial graphic through medullary brainstem from above shows the 4 nuclei of the glossopharyngeal nerve.