| PFT | pancreatic function test; parafascicular thalamotomy; posterior fossa tumor; prednisone, fluorouraci... |
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| PGE | platelet granule exract; posterior gastroenterostomy |
| PH | parathyroid hormone; partial hepatectomy; partial hysterectomy; passive hemagglutination; past histo... |
| PHM | peptide histidine methionine; peptidylglycine alpha-hydroxylating monooxygenase; posterior hyaloid m... |
| PIIS | posterior inferior iliac spine |
| posterior aphasia | Aphasia in which there is impairment in the comprehension of spoken and written words, associated with effortless, articulated, but paraphrasic, speech and writing; malformed words, substitute words, and enologisms are charcteristic. When severe, and speech is incomprehensible, it is called jargon aphasia. The patient often appears unaware of his deficit. Synonym: fluent aphasia, impressive aphasia, posterior aphasia, psychosensory aphasia, receptive aphasia, Wernicke's aphasia. (05 Mar 2000) |
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| posterior arch of atlas | The posterior arch of the atlas that connects the lateral masses of the atlas posteriorly, forming the posterior wall of the vertebral canal at this level. Synonym: arcus posterior atlantis. (05 Mar 2000) |
| posterior articular surface of dens | The facet on the posterior surface of the dens of the axis that articulates with the transverse ligament of the atlas. Synonym: facies articularis posterior dentis. (05 Mar 2000) |
| posterior asynclitism | Inclination of the foetal head so that the biparietal diameter is oblique in relation to the plane of the pelvic brim, the posterior parietal bone presenting to the parturient canal. Synonym: posterior asynclitism. (05 Mar 2000) |
| posterior atlanto-occipital membrane | The fibrous membrane that attaches between the posterior arch of the atlas and the posterior margin of the foramen magnum. Synonym: membrana atlanto-occipitalis posterior. (05 Mar 2000) |
| posterior auricular artery | <anatomy, artery> Origin: posterior aspect of external carotid just above the digastric muscle; course: ascends first between parotid gland and styloid process then between cartilage of auricle and the mastoid process; branches: muscular (digastric, stylohyoid and sternocleidomastoid), glandular (parotid), stylomastoid artery, occipital and auricular; anastomoses: anterior tympanic artery (via the stylomastoid artery) and occipital artery. Synonym: arteria auricularis posterior. (05 Mar 2000) |
| posterior auricular groove | The sulcus between the antitragus and cauda helicis overlying the antitragicohelicine fissure. Synonym: sulcus auriculae posterior. (05 Mar 2000) |
| posterior auricular muscle | <anatomy, muscle> Origin, mastoid process; insertion, posterior portion of root of auricle; action, draws back the pinna; nerve supply, facial. Synonym: musculus auricularis posterior, musculus retrahens aurem, musculus retrahens auriculam. (05 Mar 2000) |
| posterior auricular nerve | <anatomy, nerve> The first extracranial branch of the facial nerve, it passes behind the ear, supplying the posterior auricular muscle and intrinsic muscles of the auricle and, through its occipital branch, innervating the occipital belly of the occipitofrontalis muscle. Synonym: nervus auricularis posterior. (05 Mar 2000) |
| posterior auricular plexus | An autonomic plexus on the artery of this name, derived from the external carotid plexus. Synonym: plexus auricularis posterior. (05 Mar 2000) |
| posterior auricular vein | <anatomy, vein> Drains the region posterior to the ear then merges with the retromandibular vein to form the external jugular vein. Synonym: vena auricularis posterior. (05 Mar 2000) |
| posterior axillary fold | Bounds axilla posteriorly; formed by skin and fascia overlying latissimus dorsi and teres major muscles and tendons of insertion. (05 Mar 2000) |
| posterior axillary line | A vertical line extending inferiorly from the posterior axillary fold. Synonym: linea axillaris posterior, linea postaxillaris, postaxillary line. (05 Mar 2000) |
| posterior basal branch | Posterior basal branch of the basal part of the inferior lobar branch of the left and right pulmonary arteries. Synonym: ramus basalis posterior. (05 Mar 2000) |
| posterior basal segment | Posterior basal segment of inferior lobe of right and left lungs; lies adjacent to vertebral column below superior segment. Synonym: segmentum basale posterius. (05 Mar 2000) |