| ala central lobule | The lateral winglike projection of the central lobule of the cerebellum. Synonym: ala lobuli centralis, ala cerebelli. (05 Mar 2000) |
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| ala cerebelli | The lateral winglike projection of the central lobule of the cerebellum. Synonym: ala lobuli centralis, ala cerebelli. (05 Mar 2000) |
| ala cinerea | A prominence in the floor of the inferior fovea of the fourth ventricle that overlies the dorsal motor nucleus of the vagus. Synonym: trigonum nervi vagi, ala cinerea, ashen wing, gray wing, trigone of vagus nerve, va'gi eminentia. (05 Mar 2000) |
| ala cristae galli | 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) |
| ala lobuli centralis | The lateral winglike projection of the central lobule of the cerebellum. Synonym: ala lobuli centralis, ala cerebelli. (05 Mar 2000) |
| ala nasi | The outer more or less flaring wall of each nostril. Synonym: ala nasi, pinna nasi. (05 Mar 2000) |
| ala orbitalis | One of a bilateral pair of triangular, pointed plates extending laterally from the anterolateral body of the sphenoid bone. Forming the posteriormost portion of the floor of the anterior cranial fossa, their sharp posterior edge forms the sphenoidal ridge separating anterior and middle cranial fossae. The medial end of the lesser wing attaches to the body by means of two pedicles, thus forming the optic canal. The wing itself forms the superior margin of the supraorbital fissure. Synonym: ala minor ossis sphenoidalis, ala orbitalis, Ingrassia's apophysis, Ingrassia's wing. (05 Mar 2000) |
| ala sacralis | The upper surface of the lateral part of the sacrum adjacent to the body. Synonym: ala sacralis. (05 Mar 2000) |
| ala temporalis | Strong squamous processes extending in a broad superolateral curve from the body of the sphenoid bone. The greater wing presents these suraces (facies): 1) cerebral surface: forms anterior third of the floor of the lateral portions of the middle cranial fossa; 2) temporal surface: forms the deepest portion of the temporal fossa; 3) infratemporal surface, forms the "roof" of the infratemporal fossa; 4) orbital surface: forms posterolateral wall of orbit. The greater wing forms the inferior border of the supraorbital fissure, and is perforated at its root by foramina rotundum ovale, and spinosum and the pterygoid canal. Synonym: ala major ossis sphenoidalis, ala temporalis. (05 Mar 2000) |
| ala vespertilionis | An obsolete term for broad ligament of the uterus. Origin: L. Bat's wing (05 Mar 2000) |
| ala vomeris | An everted lip on either side of the upper border of the vomer, between which fits the rostrum of the sphenoid bone. Synonym: ala vomeris. (05 Mar 2000) |
| apertura sinus sphenoidalis | One of the pair of openings in the body of the sphenoid bone through which the sphenoid sinuses communicate with the sphenoethmoidal recess of the nasal cavity. Synonym: apertura sinus sphenoidalis, sphenoidal sinus aperture. (05 Mar 2000) |
| pars sphenoidalis arteriae cerebralis mediae | pars sphenoidalis arteriae cerebralis mediae |
| RNA, transfer, ala | A transfer RNA which is specific for carrying alanine to sites on the ribosomes in preparation for protein synthesis. (12 Dec 1998) |
| crista sphenoidalis | A vertical ridge in the midline of the anterior surface of the sphenoid bone that articulates with the perpendicular plate of the ethmoid bone. Synonym: crista sphenoidalis. (05 Mar 2000) |