| external surface | The outer convex surface of either the frontal or the parietal bone. Synonym: facies externa. (05 Mar 2000) |
|---|---|
| external surface of frontal bone | The convex outer surface of the frontal bone. Synonym: facies externa ossis frontalis. (05 Mar 2000) |
| external surface of parietal bone | The convex outer surface of the parietal bone. Synonym: facies externa ossis parietalis. (05 Mar 2000) |
| external traction | A pulling force created by using fixed anchorage (e.g., a headcap or bed frame) outside the oral cavity; principally used in the management of midfacial fractures. (05 Mar 2000) |
| external urethral orifice | The slitlike opening of the urethra in the glans penis, the external orifice of the urethra (in the female) in the vestibule, usually upon a slight elevation, the papilla urethrae. Synonym: ostium urethrae externum, external opening of urethra, meatus urinarius, orificium urethrae externum. (05 Mar 2000) |
| external urethral sphincter | Origin, ramus of pubis; insertion, with fellow in median raphe behind and in front of urethra; action, constricts membranous urethra; nerve supply, pudendal. Synonym: musculus sphincter urethrae, external urethral sphincter, Guthrie's muscle, musculus compressor urethrae, musculus constrictor urethrae, musculus sphincter urethrae membranaceae, sphincter muscle of urethra, Wilson's muscle. (05 Mar 2000) |
| external wall of cochlear duct | The wall that faces the outer side of the cochlea. Synonym: paries externus ductus cochlearis. (05 Mar 2000) |
| externalism | 1. The quality of being manifest to the senses; external acts or appearances; regard for externals. "This externalism gave Catholicism a great advantage on all sides." (E. Eggleston) 2. <psychology> That philosophy or doctrine which recognizes or deals only with externals, or objects of sense perception; positivism; phenomenalism. Source: Websters Dictionary (01 Mar 1998) |
| externality | <psychology> State of being external; exteriority; separation from the perceiving mind. "Pressure or resistance necessarily supposes externality in the thing which presses or resists." (A. Smith) Source: Websters Dictionary (01 Mar 1998) |
| externe | <medicine> An officer in attendance upon a hospital, but not residing in it; especially, one who cares for the out-patients. Origin: F. Cf. Extern. Source: Websters Dictionary (01 Mar 1998) |
| externus | <anatomy> Situated or occurring on the outside, many anatomical structures formerly called external are now more correctly termed lateral. Origin: L. Externus = outside (18 Nov 1997) |
| exteroceptive | Relating to the exteroceptors; denoting the surface of the body containing the end organs adapted to receive impressions or stimuli from without. Origin: L. Exterus, outside, + capio, to take (05 Mar 2000) |
| exteroceptor | One of the peripheral end organs of the afferent nerves in the skin or mucous membrane, which respond to stimulation by external agents. Origin: L. Exterus, external, + receptor, receiver (05 Mar 2000) |
| exterofective | Pertaining to the response of the nervous system to external stimuli. Origin: L. Extero, from outside, + affectus, affected (05 Mar 2000) |
| exterofective system | Name applied by Cannon to the somatic nervous system as opposed to the interofective or autonomic system. (05 Mar 2000) |