systema nervosum

Thesaurus

Noun

1.

systema nervosum - the sensory and control apparatus consisting of a network of nerve cellsnervous systembody, organic structure, physical structure - the entire structure of an organism (an animal, plant, or human being); "he felt as if his whole body were on fire"system - a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion"nerve tissue, nervous tissue - tissue composed of neuronsganglion - an encapsulated neural structure consisting of a collection of cell bodies or neuronsnerve cell, neuron - a cell that is specialized to conduct nerve impulsesfasciculus, fiber bundle, fibre bundle, fascicle - a bundle of fibers (especially nerve fibers)central nervous system, CNS, systema nervosum centrale - the portion of the vertebrate nervous system consisting of the brain and spinal cordneural net, neural network - any network of neurons or nuclei that function together to perform some function in the bodyperipheral nervous system, systema nervosum periphericum - the section of the nervous system lying outside the brain and spinal cordANS, autonomic nervous system - the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glandssympathetic nervous system - originates in the thoracic regions of the spinal cord; opposes physiological effects of the parasympathetic: reduces digestive secretions; speeds the heart; contracts blood vesselsparasympathetic, parasympathetic nervous system - originates in the brain stem and lower part of the spinal cord; opposes physiological effects of the sympathetic nervous system: stimulates digestive secretions; slows the heart; constricts the pupils; dilates blood vessels