| Ap4CH | apical four-chamber plane |
|---|---|
| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
| A/R | apical/radial |
| CAP | camptodactyly-arthropathy-pericarditis [syndrome]; Canada Assistance Plan; capsule; captopril; catab... |
| SAX-APEX | short-axis plane, apical |
| cochlear canaliculus | A minute canal in the temporal bone that passes from the cochlea inferiorly to open in front of the medial side of the jugular fossa. It contains the perilymphatic duct. Synonym: canaliculus cochleae. (05 Mar 2000) |
|---|---|
| posterior canaliculus of chorda tympani | A canal leading from the facial canal to the tympanic cavity through which the chorda tympani nerve enters this cavity. Synonym: canaliculus chordae tympani, iter chordae posterius, small canal of chorda tympani. (05 Mar 2000) |
| secretory canaliculus | See: intercellular canaliculus, intracellular canaliculus. (05 Mar 2000) |
| intercellular canaliculus | One of the fine channels between adjoining secretory cells, such as those between serous cells in salivary glands. (05 Mar 2000) |
| intracellular canaliculus | <cell biology> A fine canal formed by invagination of the cell membrane into the cytoplasm of a cell, such as those of the parietal cells of the stomach. (05 Mar 2000) |
| tympanic canaliculus | A minute canal passing from the inferior surface of the petrous portion of the temporal bone between the jugular fossa and carotid canal to the floor of the tympanic cavity. Located in the wedge of bone separating the jugular canal and carotid canal, it transmits the tympanic branch of the glossopharyngeal nerve. Synonym: canaliculus tympanicus, Jacobson's canal, tympanic canal. (05 Mar 2000) |
| external aperture of cochlear canaliculus | The external opening of the cochlear aqueduct on the temporal bone medial to the jugular fossa. Synonym: apertura externa canaliculi cochleae. (05 Mar 2000) |
| lacrimal canaliculus | A curved canal beginning at the lacrimal punctum in the margin of each eyelid near the medial commissure and running transversely medially to empty with its fellow into the lacrimal sac. Synonym: canaliculus lacrimalis. (05 Mar 2000) |
| apical | <anatomy> Relating to or located at the tip (an apex). (09 Oct 1997) |
| apical abscess | <dentistry> A dental abscess that occurs at the end of a root, caused by tooth decay which invades the pulp chamber of the tooth. Involvement of the pulp chamber can lead to destruction of the nerve and blood vessels which supply the tooth. These infections must be treated by root canal therapy (endodontics) or tooth extraction. (27 Sep 1997) |
| apical angle | The angle between two plane surfaces of a prism. Synonym: refracting angle of a prism. (05 Mar 2000) |
| apical-aortic conduit | A valved conduit between the LV apex and aorta, used to treat severe otherwise unapproachable LV outflow tract obstruction. (05 Mar 2000) |
| apical area | The area about the root end of a tooth. (05 Mar 2000) |
| apical branch | The apical branch of the following: 1) superior lobar branches of left and right pulmonary arteries; 2) left superior pulmonary vein. Synonym: ramus superior. Synonym: ramus apicalis. (05 Mar 2000) |
| apical branch of inferior lobar branch of right pulmonary artery | <anatomy, artery> Branch (of the inferior lobar branch) of the right pulmonary artery serving the apical segment of the inferior lobe of the right lung. Synonym: ramus apicalis lobi inferioris arteriae pulmonalis dextrae. (05 Mar 2000) |