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nervous system
(Encyclopedia)CE5 Nerve cell CE5 Nervous system nervous system, network of specialized tissue that controls actions and reactions of the body and its adjustment to the environment. Virtually all members of ...autonomic nervous system
(Encyclopedia)autonomic nervous system: see nervous system. ...parasympathetic nervous system
(Encyclopedia)parasympathetic nervous system: see nervous system. ...sympathetic nervous system
(Encyclopedia)sympathetic nervous system: see nervous system. ...central nervous system
(Encyclopedia)central nervous system: see nervous system. ...peripheral nervous system
(Encyclopedia)peripheral nervous system: see nervous system. ...neurology
(Encyclopedia)neurology no͝orŏlˈəjē, nyo͝o– [key], study of the morphology, physiology, and pathology of the human nervous system. As researchers, neurologists carry on investigative and experimental work i...stimulant
(Encyclopedia)stimulant, any substance that causes an increase in activity in various parts of the nervous system or directly increases muscle activity. Cerebral, or psychic, stimulants act on the central nervous s...digestive system
(Encyclopedia)CE5 Digestive system digestive system, in the animal kingdom, a group of organs functioning in digestion and assimilation of food and elimination of wastes. Virtually all animals have a digestive ...duodecimal system
(Encyclopedia)duodecimal system: see numeration. ...Browse by Subject
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