ascending reticular activating system

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• Reticular activating system — Infobox Brain Name = Reticular activating system Latin = GraySubject = GrayPage = Caption = Deep dissection of brain stem. Ventral view. (Reticular formation labeled near center.) Caption2 = IsPartOf = Components = Artery = Vein = BrainInfoType …   Wikipedia

• reticular activating system — n a part of the reticular formation that extends from the brain stem to the midbrain and thalamus with connections distributed throughout the cerebral cortex and that controls the degree of activity of the central nervous system (as in… …   Medical dictionary

• Reticular formation — Brain: reticular formation Coronal section of the pons, at its upper part. (Formatio reticularis labeled at left.) …   Wikipedia

• system — 1. [TA] A consistent and complex whole made up of correlated and semiindependent parts. A complex of functionally related anatomic structures. 2. The entire organism seen as a complex organization of parts. 3. Any complex of structures… …   Medical dictionary

• nervous system disease — Introduction       any of the diseases or disorders that affect the functioning of the human nervous system (nervous system, human). Everything that humans sense, consider, and effect and all the unlearned reflexes of the body depend on the… …   Universalium

• ARAS — ascending reticular activating system …   Medical dictionary

• ARAS — • ascending reticular activating system …   Dictionary of medical acronyms & abbreviations

• nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium

• attention — attentional, adj. n. /euh ten sheuhn/; interj. /euh ten shun /, n. 1. the act or faculty of attending, esp. by directing the mind to an object. 2. Psychol. a. a concentration of the mind on a single object or thought, esp. one preferentially… …   Universalium

• nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… …   Universalium

• Level of consciousness — (LOC) is a measurement of a person s arousability and responsiveness to stimuli from the environment.cite book |author=Kandel ER, Jessell, Thomas M.; Schwartz, James H. |title=Principles of neural science |publisher=McGraw Hill |location=New York …   Wikipedia