| LBCD | left border of cardiac dullness |
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| LBD | large bile duct; left border of dullness |
| LCB | Laboratory of Cancer Biology; Leber congenital blindness; left costal border; lymphomatosis cutis be... |
| LLB | left lateral border; long-leg brace |
| LLBCD | left lower border of cardiac dullness |
| wing plate | 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) |
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| wing-shell | <zoology> Any one of various species of marine bivalve shells belonging to the genus Avicula, in which the hinge border projects like a wing. Any marine gastropod shell of the genus Strombus. See Strombus. Any pteropod shell. Source: Websters Dictionary (01 Mar 1998) |
| sea wing | <zoology> A wing shell (Avicula). Source: Websters Dictionary (01 Mar 1998) |
| standard-wing | <zoology> A curious paradise bird (Semioptera Wallacii) which has two long special feathers standing erect on each wing. Source: Websters Dictionary (01 Mar 1998) |
| Ingrassia's wing | 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) |
| elevator muscle of upper lip and wing of nose | <anatomy, muscle> Origin, root of nasal process of maxilla; insertion, wing of nose and orbicularis oris muscle of upper lip; action, elevates upper lip and wing of nose; nerve supply, facial. Synonym: musculus levator labii superioris alaeque nasi, caput angulare quadrati labii superioris, elevator muscle of upper lip and wing of nose. (05 Mar 2000) |
| zygomatic | <anatomy> Of, pertaining to, or in the region of, the zygoma. Zygomatic arch, the arch of bone beneath the orbit, formed in most mammals by the union of the malar, or jugal, with the zygomatic process of the temporal bone. In the lower vertebrates other bones may help to form it, and there may be two arches on each side of the skull, as in some reptiles. Zygomatic process, a process of the temporal or squamosal bone helping to form the zygomatic arch. Origin: Cf. F. Zygomatique. Source: Websters Dictionary (01 Mar 1998) |
| zygomatic arch | The arch formed by the temporal process of the zygomatic bone that joins the zygomatic process of the temporal bone. Synonym: arcus zygomaticus, cheek bone, malar arch, zygoma. (05 Mar 2000) |
| zygomatic branch of facial nerve | Branches of facial nerve crossing upper cheek to supply orbicularis oculi muscle. Synonym: rami zygomatici nervi facialis. (05 Mar 2000) |
| zygomatic diameter | The extreme breadth of the skull at the zygomatic arches. (05 Mar 2000) |
| zygomatic fossa | The cavity on the side of the skull bounded laterally by the zygomatic arch and ramus of the mandible, medially by the lateral pterygoid plate, anteriorly by the zygomatic process of the maxilla, posteriorly by the articular tubercle of the temporal bone and the posterior border of the lateral pterygoid plate, and above by the squama of the temporal bone and the infratemporal crest on the greater wing of the sphenoid bone. Synonym: fossa infratemporalis, zygomatic fossa. (05 Mar 2000) |
| zygomatic fractures | Fractures of the zygoma. (12 Dec 1998) |
| zygomatic nerve | <anatomy, nerve> A branch of the maxillary nerve in the inferior orbital fissure through which it passes; it gives rise to two sensory branches, the zygomaticotemporal and zygomaticofacial, which supply the skin of the temporal and zygomatic regions and is continued as the communicating branch of the lacrimal nerve with the zygomatic nerve. Synonym: nervus zygomaticus, orbital nerve, temporomandibular nerve. (05 Mar 2000) |
| zygomaticofacial branch of zygomatic nerve | <anatomy, nerve> Penetrates zygomatic bone to supply skin of face over zygoma or cheekbone. Synonym: ramus zygomaticofacialis nervi zygomatici. (05 Mar 2000) |
| zygomaticotemporal branch of zygomatic nerve | <anatomy, nerve> Penetrates frontal process of zygomatic bone to supply skin of face lateral to orbit. Synonym: ramus zygomaticotemporalis nervi zygomatici. (05 Mar 2000) |