| LMCA | left main coronary artery; left middle cerebral artery |
|---|---|
| MCA | major coronary artery; Maternity Center Association; medical care administration; methylcholanthrene... |
| MCAO | middle cerebral artery occlusion |
| MCAS | middle cerebral artery syndrome |
| MCAT | medical college admission test; middle cerebral artery thrombosis |
| medial crus of the horizontal part of the facial canal | Medially-placed, anteriorly-directed first portion of the horizontal part of the facial canal. See: horizontal part of facial canal. Synonym: medial crus of the horizontal part of the facial canal. (05 Mar 2000) |
|---|---|
| medial part of longitudinal arch of foot | medial part of longitudinal arch of foot |
| medial part of posterior cervical intertransversarii muscles | medial part of posterior cervical intertransversarii muscles |
| glossopharyngeal part of superior pharyngeal constrictor | See: superior constrictor muscle of pharynx. Synonym: pars glossopharyngea musculi constrictoris pharyngis superioris. (05 Mar 2000) |
| mediastinal part of lung | The part of the medial surface of a lung in contact with the mediastinum. Synonym: pars mediastinalis pulmonis, facies mediastinalis pulmonis, mediastinal part of lung. (05 Mar 2000) |
| medicare part a | The Medicare program that covers inpatient hospital stays. (12 Dec 1998) |
| medicare part b | The Medicare program that covers physician and outpatient services. (12 Dec 1998) |
| pelvic part of ureter | The part of the ureter between the brim of the pelvis and the urinary bladder; the upper pelvic portion of the embryologic urogenital sinus. Synonym: pars pelvina ureteris. (05 Mar 2000) |
| ceratopharyngeal part of middle pharyngeal constrictor | See: middle constrictor muscle of pharynx. Synonym: pars ceratopharyngea musculi constrictoris pharyngis medii. (05 Mar 2000) |
| cervical part of internal carotid artery | <anatomy, artery> The unbranched portion located in the neck. Synonym: pars cervicalis arteriae carotidis internae. (05 Mar 2000) |
| cervical part of oesophagus | The part of the oesophagus located in the neck. See: oesophagus. Synonym: pars cervicalis oesophagi. (05 Mar 2000) |
| cervical part of spinal cord | The part of the spinal cord that consists of the eight cervical segments and gives rise to the first eight pairs of spinal nerves. Synonym: pars cervicalis medullae spinalis. (05 Mar 2000) |
| cervical part of thoracic duct | The portion of the thoracic duct above the first rib. Synonym: pars cervicalis ductus thoracici. (05 Mar 2000) |
| membranous part of interventricular septum | Part of the fibrous skeleton of the heart which is seen as a small, thin, round or oval nonmuscular area at the superior end of the interventricular septum; it lies just below and is continuous with the portion of the fibrous ring of the aortic valve supporting the anterior and posterior cusps, and with the right fibrous trigone; the atrioventricular bundle of conducting tissue courses along its dorsal margin and bifurcates at its inferior margin into the right and left crura. Synonym: pars membranacea septi interventricularis, membranous septum, septum membranaceum ventriculorum. (05 Mar 2000) |
| membranous part of male urethra | The portion of the male urethra, about 1 cm in length, extending from the prostate to the beginning of the urethra in the corpus spongiosum just beyond the bulb. Synonym: pars membranacea urethrae masculinae, membranous urethra. (05 Mar 2000) |