| alanyl | The acyl radical of alanine. (05 Mar 2000) |
|---|---|
| alanyl-seryl ligase | <enzyme> Catalyses incorporation of terminal ala-ser to peptidoglycan; associated with vancomycin resistance; isolated from enterococcus casseliflavus Registry number: EC 6.3.2.- Synonym: alanylseryl ligase, d-alanyl-d-seryl ligase, d-alanylseryl ligase, ala-ser ligase, vanc ligase, vanc2 protein (26 Jun 1999) |
| alar | 1. Pertaining to, or having, wings. 2. <botany> Axillary; in the fork or axil. Origin: L. Alarius, fr. Ala wing: cf. F. Alaire. Source: Websters Dictionary (01 Mar 1998) |
| alar artery of nose | A branch of the angular artery that supplies the ala of the nose. (05 Mar 2000) |
| alar chest | A chest in which the anteroposterior diameter is shorter than the average. Synonym: alar chest, pterygoid chest. (05 Mar 2000) |
| alar folds | Winglike lateral fringes or expansions of the plica synovialis infrapatellaris. Synonym: ligamenta alaria, plicae alares, alar ligaments, odontoid ligament. (05 Mar 2000) |
| alar lamina of neural tube | The dorsal division of the lateral walls of the neural tube in the embryo; it gives rise to neurons relaying afferent impulses to higher centres; in the adult such neurons compose the sensory nuclei of the spinal cord and brainstem. Synonym: lamina alaris, alar plate of neural tube, dorsolateral plate of neural tube, lamina dorsalis, wing plate. (05 Mar 2000) |
| alar ligaments | One of a pair of short stout bands that extends from the side of the dens of the axis to the tubercle on the medial aspect of the occipital condyle. Synonym: check ligaments of odontoid. Synonym: alar folds. (05 Mar 2000) |
| alar part of nasalis muscle | <anatomy> See: nasalis muscle. Synonym: pars alaris musculi nasalis. (05 Mar 2000) |
| alar plate of neural tube | The dorsal division of the lateral walls of the neural tube in the embryo; it gives rise to neurons relaying afferent impulses to higher centres; in the adult such neurons compose the sensory nuclei of the spinal cord and brainstem. Synonym: lamina alaris, alar plate of neural tube, dorsolateral plate of neural tube, lamina dorsalis, wing plate. (05 Mar 2000) |
| alar process | A small lateral expansion of the ethmoid bone from the front of the crista galli on each side that articulates with the frontal bone and forms the foramen caecum. Synonym: ala cristae galli, alar process. (05 Mar 2000) |
| alar spine | A posterior and downward projection from the greater wing of the sphenoid bone on either side, located posterolateral to the foramen spinosum, so-named for its proximity to the sphenoidal spine; gives attachment to the sphenomandibular ligament. Synonym: processus spinosus, spina ossis sphenoidalis, alar spine, angular spine, spina angularis, spinous process. (05 Mar 2000) |
| ALARA | Acronym for a philosophy of use of radiation based on using dosages as low as reasonably achievable to attain the desired diagnostic, therapeutic, or other goal. (05 Mar 2000) |
| alarm | 1. A summons to arms, as on the approach of an enemy. "Arming to answer in a night alarm." (Shak) 2. Any sound or information intended to give notice of approaching danger; a warming sound to arouse attention; a warning of danger. "Sound an alarm in my holy mountain." (Joel II. 1) 3. A sudden attack; disturbance; broil. "These home alarms." "Thy palace fill with insults and alarms." (Pope) 4. Sudden surprise with fear or terror excited by apprehension of danger; in the military use, commonly, sudden apprehension of being attacked by surprise. "Alarm and resentment spread throughout the camp." (Macaulay) 5. A mechanical contrivance for awaking persons from sleep, or rousing their attention; an alarum. Alarm bell, a bell that gives notice on danger. Alarm clock or watch, a clock or watch which can be so set as to ring or strike loudly at a prearranged hour, to wake from sleep, or excite attention. Alarm gauge, a contrivance attached to a steam boiler for showing when the pressure of steam is too high, or the water in the boiler too low. Alarm post, a place to which troops are to repair in case of an alarm. 6. To call to arms for defense; to give notice to (any one) of approaching danger; to rouse to vigilance and action; to put on the alert. 7. To keep in excitement; to disturb. 8. To surprise with apprehension of danger; to fill with anxiety in regard to threatening evil; to excite with sudden fear. "Alarmed by rumors of military preparation." (Macaulay) Synonym: Fright, affright, terror, trepidation, apprehension, consternation, dismay, agitation, disquiet, disquietude. Alarm, Fright, Terror, Consternation. These words express different degrees of fear at the approach of danger. Fright is fear suddenly excited, producing confusion of the senses, and hence it is unreflecting. Alarm is the hurried agitation of feeling which springs from a sense of immediate and extreme exposure. Terror is agitating and excessive fear, which usually benumbs the faculties. Consternation is overwhelming fear, and carries a notion of powerlessness and amazement. Alarm agitates the feelings; terror disorders the understanding and affects the will; fright seizes on and confuses the sense; consternation takes possession of the soul, and subdues its faculties. See Apprehension. Origin: F. Alarme, alarmer. It. All' arme to arms ! fr. L. Arma, pl, arms. See Arms, and cf. Alarum. Source: Websters Dictionary (01 Mar 1998) |
| alarm reaction | The various phenomena, e.g., stimulated endocrine activity, which the body exhibits as an adaptive response to injury or stress; first phase of the general adaptation syndrome. (05 Mar 2000) |