Biomaterial Database

[Sympathoactivating and sympathoinhibitory afferent fibers of the vagus and splanchnic nerves]. 1979

L V Itina

Changes in frequency of tonic impulses in efferent sympathetic fibers of the left splanchnic nerve on stimulation (10 V, 10--20 Hz, 1 ms) of afferent fibers of the right splanchnic nerve and of both trunks of the vagus nerve at the cervical and abdominal levels have been studied in experiments on cats. It is established that there are sympatho-inhibitory and sympatho-activatory fibers whose quantitative correlation is different in various trunks. Sympatho-inhibitory influencies are most marked on stimulation of vagus nerve ventral branch and sympatho-activatory ones on stimulation of right splanchnic nerve. At the cervical level, in vagal left trunk sympatho-inhibitory fibers preponderate but in the right one another correlation occurs. In abdominal cavity the distribution of both types of fibers appears to have organ principle. Fibers innervating stomach have sympatho-inhibitory action but those innervating small intestine--sympatho-activatory. This suggests the hypothesis about the role of these fibers in digestion regulation. The central cholinolytic amysil abolishes sympatho-inhibitory effects but not sympatho-activatory ones.

UI	MeSH Term	Description	Entries
D009475	Neurons, Afferent	Neurons which conduct NERVE IMPULSES to the CENTRAL NERVOUS SYSTEM.	Afferent Neurons,Afferent Neuron,Neuron, Afferent
D002415	Cats	The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)	Felis catus,Felis domesticus,Domestic Cats,Felis domestica,Felis sylvestris catus,Cat,Cat, Domestic,Cats, Domestic,Domestic Cat
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001535	Benactyzine	A centrally acting muscarinic antagonist. Benactyzine has been used in the treatment of depression and is used in research to investigate the role of cholinergic systems on behavior.	Amizil,Amizyl,Lucidil
D013153	Splanchnic Nerves	The major nerves supplying sympathetic innervation to the abdomen. The greater, lesser, and lowest (or smallest) splanchnic nerves are formed by preganglionic fibers from the spinal cord which pass through the paravertebral ganglia and then to the celiac ganglia and plexuses. The lumbar splanchnic nerves carry fibers which pass through the lumbar paravertebral ganglia to the mesenteric and hypogastric ganglia.	Nerve, Splanchnic,Nerves, Splanchnic,Splanchnic Nerve
D013564	Sympathetic Nervous System	The thoracolumbar division of the autonomic nervous system. Sympathetic preganglionic fibers originate in neurons of the intermediolateral column of the spinal cord and project to the paravertebral and prevertebral ganglia, which in turn project to target organs. The sympathetic nervous system mediates the body's response to stressful situations, i.e., the fight or flight reactions. It often acts reciprocally to the parasympathetic system.	Nervous System, Sympathetic,Nervous Systems, Sympathetic,Sympathetic Nervous Systems,System, Sympathetic Nervous,Systems, Sympathetic Nervous
D014630	Vagus Nerve	The 10th cranial nerve. The vagus is a mixed nerve which contains somatic afferents (from skin in back of the ear and the external auditory meatus), visceral afferents (from the pharynx, larynx, thorax, and abdomen), parasympathetic efferents (to the thorax and abdomen), and efferents to striated muscle (of the larynx and pharynx).	Cranial Nerve X,Pneumogastric Nerve,Tenth Cranial Nerve,Nerve X,Nervus Vagus,Cranial Nerve, Tenth,Cranial Nerves, Tenth,Nerve X, Cranial,Nerve Xs,Nerve, Pneumogastric,Nerve, Tenth Cranial,Nerve, Vagus,Nerves, Pneumogastric,Nerves, Tenth Cranial,Nerves, Vagus,Pneumogastric Nerves,Tenth Cranial Nerves,Vagus Nerves,Vagus, Nervus