| PCA | para-chloramphetamine; parietal cell antibody; passive cutaneous anaphylaxis; patient care assistant... |
|---|---|
| PCL | pacing cycle length; persistent corpus luteum; plasma cell leukemia; posterior chamber lens; posteri... |
| PD | Doctor of Pharmacy; Dublin Pharmacopoeia; interpupillary distance; Paget disease; pancreatic duct; p... |
| PICA | percutaneous transluminal coronary angioplasty; Porch Index of Communicative Abilities; posterior in... |
| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
| Carabelli tubercle | A small tubercle, resembling a supernumerary cusp, found occasionally on the lingual surface of the mesiolingual cusp of a permanent maxillary first molar. (05 Mar 2000) |
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| mamillary tubercle | A small apophysis or tubercle on the dorsal margin of the superior articular process of each of the lumbar vertebrae and usually of the twelfth thoracic vertebra. Synonym: processus mamillaris, mamillary tubercle, metapophysis. (05 Mar 2000) |
| mamillary tubercle of hypothalamus | A small, round, paired cell group that protrudes into the interpeduncular fossa from the inferior aspect of the hypothalamus. It receives hippocampal fibres through the fornix and projects fibres to the anterior thalamic nuclei and into the brainstem tegmentum. Synonym: corpus mamillare, mamillary tubercle of hypothalamus. (05 Mar 2000) |
| genial tubercle | A slight projection, sometimes two, in the middle line of the posterior surface of the body of the mandible, giving attachment to the geniohyoid muscle (below) and the genioglossus (above). Synonym: spina mentalis, genial tubercle. (05 Mar 2000) |
| marginal tubercle | A prominence on the temporal border of the zygomatic bone to which the temporal fascia is attached. Synonym: tuberculum marginale ossis zygomatici, marginal tubercle. (05 Mar 2000) |
| marginal tubercle of zygomatic bone | A prominence on the temporal border of the zygomatic bone to which the temporal fascia is attached. Synonym: tuberculum marginale ossis zygomatici, marginal tubercle. (05 Mar 2000) |
| genital tubercle | The median elevation just cephalic to the urogenital orifice of an embryo; it is the primordium of the penis of the male or the clitoris of the female. Synonym: phallic tubercle. (05 Mar 2000) |
| Gerdy's tubercle | <anatomy> A tubercle on the lateral side of the upper end of the tibia giving attachment to the iliotibial tract and some fibres of the tibialis anterior muscle. (05 Mar 2000) |
| carotid tubercle | The anterior tubercle of the transverse process of the sixth cervical vertebra, against which the carotid artery may be compressed by the finger. Synonym: tuberculum caroticum, Chassaignac's tubercle. (05 Mar 2000) |
| Ghon's tubercle | Calcification seen in pulmonary parenchyma (usually mid-lung area) and hilar nodes resulting from earlier, usually childhood, infection with tuberculosis. Synonym: Ghon's complex, Ghon's focus, Ghon's primary lesion. (05 Mar 2000) |
| caseous tubercle | A tubercle showing caseous necrosis. Synonym: caseous tubercle. (05 Mar 2000) |
| Chassaignac's tubercle | The anterior tubercle of the transverse process of the sixth cervical vertebra, against which the carotid artery may be compressed by the finger. Synonym: tuberculum caroticum, Chassaignac's tubercle. (05 Mar 2000) |
| mental tubercle | A paired eminence on the mental protuberance of the mandible. Synonym: tuberculum mentale, eminentia symphysis. (05 Mar 2000) |
| gracile tubercle | Tubercle of gracile nucleus, the somewhat expanded upper end of the gracile fasciculus, corresponding to the position of the gracile nucleus. Synonym: tuberculum nuclei gracilis, clava, gracile tubercle, tubercle of nucleus gracilis, tuberculum gracile. (05 Mar 2000) |
| gray tubercle | Greater tubercle of humerus, the larger of the two tubercles next to the head of the humerus; it gives attachment to the supraspinatus, infraspinatus, and teres minor muscles. Synonym: tuberculum majus humeri, greater tuberosity of humerus, tuberculum cinereum. (05 Mar 2000) |