| ramus posterior descendens | The descending posterior branch of the superior lobar branch of the right pulmonary artery. Synonym: ramus posterior descendens. (05 Mar 2000) |
|---|---|
| pars descendens aortae | A part of the aorta, further divided into the thoracic aorta and the abdominal aorta. Synonym: pars descendens aortae, aorta descendens, descending part of aorta. (05 Mar 2000) |
| pars descendens duodeni | pars descendens duodeni |
| colon descendens | The fourth portion of the large intestine (colon) that communicates with the transverse colon in the left-upper quadrant of the abdomen and the rectum below. (27 Sep 1997) |
| descendens | Synonym: descending. Origin: L. (05 Mar 2000) |
| descendens cervicalis | Fibres from the second and third cervical nerves that pass forward and downward along the internal jugular vein; they contribute to the ansa cervicalis and innervate the infrahyoid muscles. Synonym: descendens cervicalis, radix inferior ansae cervicalis. (05 Mar 2000) |
| descendens hypoglossi | The fibres that arise from the first and second cervical nerves, accompany the hypoglossal nerve, then branch off to meet the inferior root in the ansa cervicalis; they innervate the infrahyoid muscles. Synonym: descendens hypoglossi, descending branch of hypoglossal nerve, radix superior ansae cervicalis. (05 Mar 2000) |
| tractus descendens nervi trigemini | <anatomy, nerve> A compact fibre bundle, comma-shaped on transverse section, composed of primary sensory fibres of the portio major of the trigeminal nerve, descending from the level of the entrance of the trigeminus in the upper pons down through the dorsolateral region of the rhombencephalic tegmentum along the lateral side of the descending or spinal nucleus of the trigeminus, emerging on the dorsolateral surface of the lower medulla oblongata as the tuberculum cinereum, and continuing as far as the second cervical segment of the spinal cord. Its fibres are distributed to the descending or spinal nucleus of the trigeminus. Synonym: tractus spinalis nervi trigemini, descending tract of trigeminal nerve, tractus descendens nervi trigemini. (05 Mar 2000) |
| arteria | Synonym: artery. See: branch. Origin: L. From G. Arteria, the windpipe, later an artery as distinct from a vein (05 Mar 2000) |
| arteria acetabuli | An arterial branch that supplies the acetabulum; two arteries, the obturator and the medial femoral circumflex, have such branches. Synonym: ramus acetabularis, acetabular artery, arteria acetabuli. (05 Mar 2000) |
| arteria alveolaris inferior | <anatomy, artery> Origin, 1st part of maxillary artery; distribution, through mandibular foramen/canal to lower teeth and chin; branches, artery to mylohyoid, mental artery, dental arteries. Synonym: arteria alveolaris inferior, inferior dental artery. (05 Mar 2000) |
| arteria alveolaris superior posterior | <anatomy, artery> Origin, 3rd part of maxillary artery within pterygopalatine fossa; distribution, molar and premolar teeth, gingiva and mucous membrane of maxillary sinus. Synonym: arteria alveolaris superior posterior, posterior alveolar artery, posterior dental artery. (05 Mar 2000) |
| arteria anastomotica auricularis magna | <anatomy, artery> A vessel of variable origin, most commonly a branch of the circumflex artery, coursing posteriorly through the base of the interatrial septum toward the crux of the heart, anastomosing with coronary artery branches supplying the atrioventricular node, the atrioventricular bundle (bundle of His), and the upper posterior walls of the left ventricle. Synonym: arteria anastomotica auricularis magna. (05 Mar 2000) |
| arteria anastomotica magna | <anatomy, artery> Origin, brachial; distribution, arm muscles at back of elbow; anastomoses, anterior and posterior ulnar recurrent, superior ulnar collateral, profunda brachii, and recurrent interosseous, as part of the articular network of the elbow. Synonym: arteria collateralis ulnaris inferior, arteria anastomotica magna, great anastomotic artery. (05 Mar 2000) |
| arteria angularis | <anatomy, artery> The terminal branch of the facial artery; distribution, muscles and skin of side of nose; anastomoses, lateral nasal, and dorsal artery of nose and palpebrals from the ophthalmic artery, thereby providing an external-internal carotid arterial anastomosis. Synonym: artery of angular gyrus. Synonym: arteria angularis. (05 Mar 2000) |