| IO | incisal opening; inferior oblique; inferior olive; internal os; interorbital; intestinal obstruction... |
|---|---|
| IQAS | internal quality assurance system |
| IRE | internal rotation in extension; iron-responsive element; isolated rabbit eye |
| IRF | idiopathic retroperitoneal fibrosis; impulse response function; interferon regulatory factor; intern... |
| IRS | immunoreactive secretion; infrared spectrophotometry; insulin receptor species; insulin receptor sub... |
| ITA's | internal thoracic arteries |
|---|---|
| RITA | right internal thoracic artery |
| central canal of spinal cord | The ependyma-lined lumen (cavity) of the neural tube, the cerebral part of which remains patent to form the ventricles of the brain, while the spinal part in the adult often is reduced to a solid strand of modified ependyma. Synonym: canalis centralis medullae spinalis, central canal of spinal cord, tubus medullaris. Synonym: syringocele. (05 Mar 2000) |
|---|---|
| central canal of the vitreous | A minute canal running through the vitreous from the discus nervi optici to the lens, containing in foetal life a prolongation of the central artery of the retina, the hyaloid artery. See: vitreous, hyaloid artery. Synonym: canalis hyaloideus, central canal of the vitreous, Cloquet's canal, Stilling's canal. (05 Mar 2000) |
| vomerine canal | An opening between the vaginal process of the sphenoid and the ala of the vomer on either side. It conveys a branch of the sphenopalatine artery. Synonym: canalis vomerovaginalis, basipharyngeal canal, vomerine canal. (05 Mar 2000) |
| vomerobasilar canal | A small canal between the superior border of the vomer and the rostrum of the sphenoidal bone. Synonym: canalis vomerorostralis, vomerobasilar canal. (05 Mar 2000) |
| vomerorostral canal | A small canal between the superior border of the vomer and the rostrum of the sphenoidal bone. Synonym: canalis vomerorostralis, vomerobasilar canal. (05 Mar 2000) |
| vomerovaginal canal | An opening between the vaginal process of the sphenoid and the ala of the vomer on either side. It conveys a branch of the sphenopalatine artery. Synonym: canalis vomerovaginalis, basipharyngeal canal, vomerine canal. (05 Mar 2000) |
| pelvic canal | The passage from the superior to the inferior aperture of the pelvis. (05 Mar 2000) |
| cervical axillary canal | Canal through which the subclavian vessels and brachial vessels reach the upper extremities (or extremity). (05 Mar 2000) |
| cervical canal | A fusiform canal extending from the isthmus of the uterus to the opening of the uterus into the vagina. Synonym: canalis cervicis uteri. (05 Mar 2000) |
| cervicoaxillary canal | Superior opening to the axilla, bounded by clavicle anteriorly, scapula posteriorly and first rib medically. Axillary vessels and brachial plexus are transmitted. (05 Mar 2000) |
| mental canal | The anterior opening of the mandibular canal on the body of the mandible lateral to and above the mental tubercle giving passage to the mental artery and nerve. Synonym: foramen mentale, mental canal. (05 Mar 2000) |
| pericardioperitoneal canal | The portion of the embryonic celom that joins the pericardial cavity to the peritoneal cavity, developing into the pleural cavities. Synonym: pleural canal. (05 Mar 2000) |
| greater palatine canal | The canalis formed between the maxilla and palatine bones; it transmits the descending palatine artery and the greater palatine nerve. Synonym: canalis palatinus major, pterygopalatine canal. (05 Mar 2000) |
| persistent atrioventricular canal | A condition that is caused when the atrial and ventricular septa fail to meet, as in normal development, resulting in a low atrial and high ventricular septal defect or a common atrioventricular canal. Synonym: endocardial cushion defect. (05 Mar 2000) |
| gubernacular canal | A small canal located between the permanent tooth germ and the apex of the deciduous tooth, containing remnants of dental lamina and connective tissue. (05 Mar 2000) |