| sphenoidal sinus aperture | 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) |
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| sphenoidal 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) |
| sphenoidal turbinated bones | Paired ossicles of pyramidal shape, the spines of which are in contact with the medial pterygoid lamina, the bases forming the roof of the nasal cavity. Synonym: conchae sphenoidales, Bertin's bones, Bertin's ossicles, sphenoidal turbinated bones. (05 Mar 2000) |
| sphenoidale | The point of greatest convexity between the anterior contour of the sella turcica and the jugum sphenoidale. (05 Mar 2000) |
| sphenoiditis | 1. Inflammation of the sphenoid sinus. 2. Necrosis of the sphenoid bone. Origin: sphenoid + G. -itis, inflammation (05 Mar 2000) |
| sphenoidostomy | An operative opening made in the anterior wall of the sphenoid sinus. Origin: sphenoid + G. Stoma, mouth (05 Mar 2000) |
| sphenoidotomy | Any operation on the sphenoid bone or sinus. Origin: sphenoid + G. Tome, a cutting (05 Mar 2000) |
| sphenomalar | Relating to the sphenoid and the zygomatic bones. Synonym: sphenomalar. (05 Mar 2000) |
| sphenomandibular ligament | <anatomy> The fibrous band that passes from the spine of the sphenoid bone to the lingula of the mandible; it is a primary passive support of the mandible serving as a "swinging axis", enabling depression and elevation around a transverse axis passing through the two lingulae, while at the same time enabling protraction and retraction. Synonym: ligamentum sphenomandibulare. (05 Mar 2000) |
| sphenomaxillary | Relating to the sphenoid bone and the maxilla. (05 Mar 2000) |
| sphenomaxillary fissure | A cleft between the greater wing of the sphenoid and the orbital plate of the maxilla, through which pass the maxillary division and the orbital branch of the trigeminal nerve, fibres from the pterygopalatine (Meckel's) ganglion, and the infraorbital vessels. Synonym: fissura orbitalis inferior, sphenomaxillary fissure. (05 Mar 2000) |
| sphenomaxillary fossa | Sphenomaxillary fossa, a small pyramidal space, housing the pterygopalatine ganglion, between the pterygoid process, the maxilla, and the palatine bone. Synonym: fossa pterygopalatina, Bichat's fossa, pterygomaxillary fossa, sphenomaxillary fossa. (05 Mar 2000) |
| sphenomaxillary suture | An inconstant suture between the pterygoid process of the sphenoid bone and the body of the maxilla. Synonym: sutura sphenomaxillaris. (05 Mar 2000) |
| sphenopalatine | Relating to the sphenoid and the palatine bones. (05 Mar 2000) |
| sphenopalatine artery | <anatomy, artery> Origin, third part of maxillary; distribution, posterior portion of lateral nasal wall and septum; anastomoses, branches of descending palatine, superior labial, and infraorbital. Synonym: arteria sphenopalatina. (05 Mar 2000) |
| sphenoethmoidal s. |
1. sutura sphenoethmoidalis. 2. a craniometric landmark, being the most superior point of the sutura sphenoethmoidalis. Called also point SE. Abbreviated SE.
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| sphenofrontal |
pertaining to the sphenoid and frontal bones.
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| sphenofrontal s. |
sutura sphenofrontalis.
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| sphenoid a. |
1. an angle at the top of the sella turcica between lines from the nasal point and from the tip of the rostrum of the sphenoid. 2. angulus sphenoidalis ossis parietalis.
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| sphenoid b. |
os sphenoidale.
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