| pterygopalatine ganglion | A small parasympathetic ganglion in the upper part of the pterygopalatine fossa whose postsynaptic fibres supply the lacrimal, nasal, palatine and pharyngeal glands. Synonym: ganglion pterygopalatinum, Meckel's ganglion, nasal ganglion, sphenopalatine ganglion. (05 Mar 2000) |
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| pterygopalatine groove | A groove on both the body of the maxilla and the perpendicular plate of the palatine bone; when the bones are articulated the grooves form the greater palatine canal. Synonym: sulcus palatinus major, pterygopalatine groove, sulcus for greater palatine nerve, sulcus pterygopalatinus. (05 Mar 2000) |
| pterygopalatine nerves | <anatomy, nerve> The ganglionic branches, two short sensory branches of the maxillary nerve in the pterygopalatine fossa, the fibres of which pass through the pterygopalatine ganglion without synapse. Synonym: radix sensoria ganglii pterygopalatini, rami ganglionici nervi maxillaris, rami ganglionares, nervi pterygopalatini, nervi sphenopalatini, pterygopalatine nerves, sensory root of pterygopalatine ganglion. (05 Mar 2000) |
| pterygopharyngeal part of superior constrictor muscle of pharynx | pterygopharyngeal part of superior constrictor muscle of pharynx |
| pterygopodium | Origin: NL, fr. Gr, a fin +, dim. Of, a foot. <anatomy> A specially modified part of the ventral fin in male elasmobranchs, which serves as a copulatory organ, or clasper. Source: Websters Dictionary (01 Mar 1998) |
| pterygoquadrate | <anatomy> Of, pertaining to, or representing the pterygoid and quadrate bones or cartilages. Origin: Pterygoid + quadrate. Source: Websters Dictionary (01 Mar 1998) |
| pterygospinal ligament | <anatomy> A membranous ligament extending from the spine of the sphenoid to the upper part of the posterior border of the lateral pterygoid lamina. Synonym: ligamentum pterygospinale, Civinini's ligament, pterygospinal ligament. (05 Mar 2000) |
| pterygospinous ligament | <anatomy> A membranous ligament extending from the spine of the sphenoid to the upper part of the posterior border of the lateral pterygoid lamina. Synonym: ligamentum pterygospinale, Civinini's ligament, pterygospinal ligament. (05 Mar 2000) |
| pterygospinous process | A sharp projection from the posterior edge of the lateral pterygoid plate of the sphenoid bone. Synonym: processus pterygospinosus, Civinini's process. (05 Mar 2000) |
| pteryla | Origin: NL, fr. Gr. Feather + wood, forest. <zoology> One of the definite areas of the skin of a bird on which feathers grow; contrasted with apteria. Source: Websters Dictionary (01 Mar 1998) |
| pterylography | <ornithology> The study or description of the arrangement of feathers, or of the pterylae, of birds. (06 Mar 1998) |
| pterylosis | <zoology> The arrangement of feathers in definite areas. Origin: NL, fr. NL. & E. Pteryla. Source: Websters Dictionary (01 Mar 1998) |