| TBI | thyroid-binding index; thyroxine-binding index; tooth-brushing instruction; total-body irradiation; ... |
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| TBX | thromboxane; total body irradiation |
| TLI | thymidine labeling index; total lymphatic irradiation; trypsin-like immune activity; Tucker-Lewis in... |
| TNI | total nodal irradiation |
| UBI | ultraviolet blood irradiation |
| aponeurosis of internal abdominal oblique muscle | <anatomy> Broad, flat tendinous portion of the internal abdominal oblique muscle. The fleshy fibres of the muscle end in the aponeurosis lateral to the semilunar line. The uppermost portion of the aponeurosis is attached to the outer surfaces and lower borders of the seventh to ninth costal cartilages. Of the portion extending between the costoxiphoid margin and the pubis, the upper two-thirds splits into anterior and posterior laminae at the lateral border of the rectus abdominis muscle to contribute to the anterior and posterior walls of the sheath of the rectus abdominis muscle as they extend to the midline linea alba. The lower third of the aponeurosis does not split but joins the aponeuroses of the external abdominal oblique and transversus abdominis muscles to form the anterior wall of the sheath of the rectus abdominis muscle. The fibres of the portion of the aponeurosis contributing to the rectus sheath decussate with those of the contralateral aponeurosis in the linea alba. The lowermost portion of the aponeurosis blends with the aponeurosis of the transversus abdominis muscle to form the conjoint tendon, attaching to the pubic crest and often the pecten pubis, thus forming the posterior wall of the inguinal canal at the superficial inguinal ring. See: cremasteric fascia, conjoint tendon, rectus sheath. (05 Mar 2000) |
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| radiography, abdominal | Radiographic visualization of the body between the thorax and the pelvis, i.e., within the peritoneal cavity. (12 Dec 1998) |
| reflex, abdominal | Contractions of the abdominal muscles upon stimulation of the skin (superficial abdominal reflex) or tapping neighboring bony structures (deep abdominal reflex). The superficial reflex may be weak or absent, for example, after a stroke, a sign of upper (suprasegmental) motor neuron lesions. (12 Dec 1998) |
| cavity, abdominal | The space between the abdominal wall and the spine. (12 Dec 1998) |
| pectoral and abdominal anterior cutaneous branch of intercostal nerves | The ventral primary rami of spinal nerves T7-T11 (seventh to eleventh intercostal nerves), which supply the abdominal as well as the thoracic wall; innervate intercostal, subcostal, serratus posterior inferior, transversus abdominis, external and internal oblique, and rectus abdominis muscles, and provide sensory branches to the periphery of the diaphragm, and parietal pleura and peritoneum. Synonym: rami cutanei anteriores pectoralis et abdominalis nervorum intercostalium, ramus cutaneus anterior (pectoralis et abdominalis) nervorum thoracicorum, anterior cutaneous nerves of abdomen, pectoral and abdominal anterior cutaneous branch of intercostal nerves. (05 Mar 2000) |
| muscles, abdominal | A large group of muscles in the front of the abdomen that assists in the regular breathing movement and supports the muscles of the spine while lifting and keeping abdominal organs such as the intestines in place. Abdominal muscles play a key role in exercises such as sit-ups. (12 Dec 1998) |
| pregnancy, abdominal | Ectopic pregnancy with development of the foetus in the abdominal cavity. (12 Dec 1998) |
| Heyns' abdominal decompression apparatus | A vacuum chamber enclosing the abdomen of the pregnant woman, creating pressure during the first stage of labour. (05 Mar 2000) |
| secondary abdominal pregnancy | A condition in which the embryo or foetus continues to grow in the abdominal cavity after its expulsion from the fallopian tube or other seat of its primary development. Synonym: abdominocyesis. (05 Mar 2000) |
| hysterectomy, abdominal | Surgical removal of the uterus through an incision made in the abdominal wall. As opposed to a vaginal hysterectomy. (12 Dec 1998) |
| deep abdominal reflexes | Contraction of abdominal muscles elicited by stimulation, such as tapping a deep structure; e.g., the costal margin. See: Galant's reflex, upper abdominal periosteal reflex. (05 Mar 2000) |
| diffuse abdominal calcification | <radiology> Ovarian cystadenocarcinoma (psammomatous Calcium), pseudomyxoma peritonei, pseudomucinous cystadenoma of ovary, mucocele of appendix, undifferentiated abdominal malignancy, TB peritonitis, oil granulomata, meconium peritonitis (12 Dec 1998) |
| intra-abdominal | Within the abdomen. (05 Mar 2000) |
| intra-abdominal abscess | <surgery> A localised pus-forming (suppurative) bacterial infection that occurs within the abdominal cavity as the result of a perforated viscus or post operative complication. Treatment requires either percutaneous or open surgical drainage. (27 Sep 1997) |
| intra-abdominal calcifications | <radiology> Urinary, kidneys, ureters, prostate, seminal vesicles, biliary, gallstones (15% radiopaque), milk of calcium bile, porcelain gall bladder, pancreatic, vascular, lymph nodes, neoplastic, psammomatous calcification (especially mucinous adenocarcinoma), miscellaneous, appendiceal mucocele, appendicolith, ovarian teratoma, haematoma, injection granuloma (12 Dec 1998) |