| BA | Bachelor of Arts; backache; bacterial agglutination; basilar artery; basion; benzyladenine; best amp... |
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| BC | Bachelor of Surgery [Lat. Baccal-aureus Chirurgiae]; back care; bactericidal concentration; basal ce... |
| BFR | biologic false reaction; blood flow rate; bone formation rate; buffered Ringer [solution] |
| BG | basal ganglion; basic gastrin; Bender Gestalt [test]; beta-galactosidase; beta-glucuronidase; bicolo... |
| BI | background interval; bacterial or bactericidal index; base-in [prism]; basilar impression; Billroth ... |
| 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) |
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| Rolando's tubercle | A longitudinal prominence on the dorsolateral surface of the medulla oblongata along the lateral border of the tuberculum cuneatum; it is the surface profile of the spinal tract of trigeminal nerve, continuous caudally with the dorsolateral fasciculus (Lissauer's tract). Synonym: ashen tubercle, gray tubercle, Rolando's tubercle. (05 Mar 2000) |
| phallic 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) |
| pharyngeal tubercle | A projection from the undersurface of the basilar portion of the occipital bone, giving attachment to the fibrous raphe of the pharynx. Synonym: tuberculum pharyngeum. (05 Mar 2000) |
| wedge-shaped tubercle | tubercle of cuneate nucleus |
| Morgagni's tubercle | A small nonarticulating rod of elastic cartilage in the aryepiglottic fold anterolateral and somewhat superior to the corniculate cartilage. Synonym: cartilago cuneiformis, Morgagni's cartilage, Morgagni's tubercle, Wrisberg's cartilage. (05 Mar 2000) |
| Whitnall's tubercle | A small elevation on the orbital surface of the zygomatic bone, just within the orbital margin, about 1 cm below the zygomaticofrontal suture; it gives attachment to the lateral check ligament, the lateral palpebral ligament, and the suspensory ligament of the eyeball. Synonym: eminentia orbitalis ossis zygomatici, orbital eminence of zygomatic bone, Whitnall's tubercle. (05 Mar 2000) |
| Muller's tubercle | A median protuberance projecting into the embryonic urogenital sinus from its dorsal wall; it is formed from the fused caudal ends of the paramesonephric ducts and is the first evidence of the embryonic uterus and vagina. Synonym: sinus tubercle. (05 Mar 2000) |
| Wrisberg's tubercle | A rounded eminence on the posterior part of the aryepiglottic fold, formed by the underlying cuneiform cartilage. Synonym: tuberculum cuneiforme, Wrisberg's tubercle. (05 Mar 2000) |
| conoid tubercle | The prominence near the lateral end of the inferior surface of the clavicle that gives attachment to the conoid ligament. Synonym: tuberculum conoideum, conoid process. (05 Mar 2000) |
| corniculate tubercle | A rounded eminence on the posterior part of the aryepiglottic fold, formed by the underlying corniculate cartilages. Synonym: tuberculum corniculatum, Santorini's tubercle. (05 Mar 2000) |
| crest of lesser tubercle | The ridge below the lesser tubercle of the humerus into which the teres major muscle inserts. Synonym: crista tuberculi minoris, bicipital ridges. (05 Mar 2000) |
| crown tubercle | Tubercle of cuneate nucleus, the bulbous rostral extremity of the fasciculus cuneatus corresponding to the position of the cunate nucleus, lying lateral to the clava and separated from the tuberculum cinereum on its lateral side by the posterior lateral sulcus. Synonym: tuberculum nuclei cuneati, tuberculum cuneatum, wedge-shaped tubercle. (05 Mar 2000) |
| posterior tubercle of atlas | A protuberance of the posterior extremity of the arch of the atlas, a rudiment of the spinous process giving attachment to the musculus rectus capitis posterior minor muscle. Synonym: tuberculum posterius atlantis. (05 Mar 2000) |
| posterior tubercle of cervical vertebrae | A posterior projection from the transverse processes. Synonym: tuberculum posterius vertebrarum cervicalium. (05 Mar 2000) |