| IMA | Industrial Medical Association; inferior mesenteric artery; Interchurch Medical Assistance; internal... |
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| ITA | inferior temporal artery; internal thoracic artery; International Tuberculosis Association |
| LCA | left circumflex artery; left coronary artery; leukocyte common antigen; lithocholic acid; lymphocyte... |
| LMC | large motile cell; lateral motor column; left main coronary [artery]; left middle cerebral [artery];... |
| LMCA | left main coronary artery; left middle cerebral artery |
| transverse lines of sacrum | One of four ridges that cross the pelvic surface of the sacrum; these mark the positions of the intervertebral disks between the bodies of the five sacral vertebrae in the immature bone. Synonym: lineae transversa ossi sacri. (05 Mar 2000) |
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| transverse metacarpal ligament | <anatomy> The ligament that interconnects the palmar surface of the heads of the second to fifth metacarpals, being continuous with the palmar ligaments on palmar plates; it lies in the plane of the palmar interosseous fascia. Synonym: ligamentum metacarpale transversum profundum, transverse metacarpal ligament. (05 Mar 2000) |
| transverse metatarsal ligament | <anatomy> The ligament that interconnects the plantar surface of the heads of the metatarsals, being continuous with the plantar ligaments. Synonym: ligamentum metatarsale transversum profundum, transverse metatarsal ligament. (05 Mar 2000) |
| transverse muscle of abdomen | <anatomy, muscle> Origin, seventh to twelfth costal cartilages, lumbar fascia, iliac crest, and inguinal ligament; insertion, xiphoid cartilage and linea alba and, through the conjoint tendon, pubic tubercle and pecten; action, compresses abdominal contents; nerve supply, lower thoracic. Synonym: musculus transversus abdominis, musculus transversalis abdominis, transverse muscle of abdomen. (05 Mar 2000) |
| transverse muscle of auricle | <anatomy> A band of sparse muscular fibres on the cranial surface of the auricle, extending from the eminence of the concha to the eminence of the scapha. Synonym: musculus transversus auriculae, transverse muscle of auricle. (05 Mar 2000) |
| transverse muscle of chin | <anatomy> Inconstant fibres of the depressor anguli oris musculus continue into the neck and cross to the opposite side inferior to the chin. Synonym: musculus transversus menti, transverse muscle of chin. (05 Mar 2000) |
| transverse muscle of nape | <anatomy> An occasional muscle passing between the tendons of the trapezius and sternocleidomastoid, possibly a fasciculus of the posterior auricular muscle. Synonym: musculus transversus nuchae, transverse muscle of nape. (05 Mar 2000) |
| transverse muscle of thorax | <anatomy, muscle> Origin, dorsal surface of xiphoid cartilage and lower portion of dorsal surface of body of sternum; insertion, second to sixth costal cartilages; action, contributes to depression of ribs, narrowing chest; nerve supply, intercostal. Synonym: musculus transversus thoracis, musculus triangularis sterni, sternocostalis muscle, transverse muscle of thorax. (05 Mar 2000) |
| transverse muscle of tongue | An intrinsic muscle of the tongue, the fibres of which arise from the septum and radiate to the dorsum and sides; action, decreases lateral dimension of the tongue; nerve supply, hypoglossal for motor, lingual for sensory. Synonym: musculus transversus linguae. (05 Mar 2000) |
| transverse myelitis | An inflammatory process involving both gray and white matter of spinal cord. (05 Mar 2000) |
| transverse nasal groove | A single deep horizontal groove at the level of the alae, with no associated defects. Synonym: transverse nasal groove. (05 Mar 2000) |
| transverse nerve of neck | <anatomy, nerve> A branch of the cervical plexus that supplies the skin over the anterior triangle of the neck. Synonym: nervus transversus colli, cutaneous cervical nerve, nervus cervicalis superficialis, superficial cervical nerve, transverse nerve of neck. (05 Mar 2000) |
| transverse occipital sulcus | The posterior, vertical limb of the intraparietal sulcus. Synonym: sulcus occipitalis transversus. (05 Mar 2000) |
| transverse oval pelvis | A pelvis in which the transverse diameter is more than 1 cm longer but less than 3 cm longer than the anteroposterior diameter. Synonym: transverse oval pelvis. (05 Mar 2000) |
| transverse palatine fold | A masticatory vestige on the hard palate; one of several irregular, sometimes branching, crests of soft tissue that radiate from the region of the incisive papillae at their most anterior parts and extend a slight distance backward, crossing the hard palate and reaching laterally for variable distances. Synonym: plica palatina transversa, ruga palatina, transverse palatine ridge. (05 Mar 2000) |