autonomic nervous system tr
61parasympathetic nervous system — noun Date: circa 1934 the part of the autonomic nervous system that contains chiefly cholinergic fibers, that tends to induce secretion, to increase the tone and contractility of smooth muscle, and to slow heart rate, and that consists of a… …
62sympathetic nervous system — noun Date: 1850 the part of the autonomic nervous system that contains chiefly adrenergic fibers and tends to depress secretion, decrease the tone and contractility of smooth muscle, and increase heart rate compare parasympathetic nervous system …
63sympathetic nervous system — One of the two divisions of the vertebrate autonomic nervous system (the other being the parasympathetic nervous system). The sympathetic preganglionic neurons have their cell bodies in the thoracic and lumbar regions of the spinal cord, and… …
64sympathetic nervous system — noun The part of the autonomic nervous system that under stress raises blood pressure and heart rate, constricts blood vessels and dilates the pupils. See Also: parasympathetic nervous system, sympathectomy …
65vegetative nervous system — n AUTONOMIC NERVOUS SYSTEM …
66parasympathetic nervous system — noun Physiology, Anatomy that part of the autonomic nervous system which consists of nerves arising from the cranial and sacral regions, and which functions in opposition to the sympathetic nervous system, thus inhibiting heartbeat, contracting… …
67somatic nervous system — noun Physiology, Anatomy the part of the peripheral nervous system involved with the voluntary control of body movements through the action of skeletal muscles, and with reception of external stimuli. Compare autonomic nervous system …
68central nervous system — n. Anat. the brain and spinal cord of a vertebrate: see AUTONOMIC NERVOUS SYSTEM …
69cerebrospinal nervous system — noun : the portion of the nervous system in vertebrates comprising the brain, cranial nerves, spinal cord, and the spinal nerves concerned with transmission of impulses from sense organs to the voluntary muscles compare autonomic nervous system …
70vegetative nervous system — noun autonomic nervous system …
