| bifurcation | Split into two parts. A change in the stability or in the types of solutions which occurs as a parameter is varied in a dissipative dynamic system. The change can be seen as a bifurcation point in a graph of the parameter being varied vs. One of the properties of the solutions. (09 Oct 1997) |
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| bifurcation lymph nodes | Several large lymph nodes inferior to the tracheal bifurcation; they receive afferents from the bronchopulmonary nodes and the heart, and send efferents to the superior tracheobronchial and tracheal nodes. Synonym: nodi lymphatici tracheobronchiales inferiores, bifurcation lymph nodes, carinal lymph nodes. (05 Mar 2000) |
| bifurcation of aorta | The division of the aorta into right and left common iliac arteries; it occurs at the level of the fourth and fifth lumbar vertebral body. Synonym: bifurcatio aortae. (05 Mar 2000) |
| bifurcation of pulmonary trunk | The division of the pulmonary trunk into right and left pulmonary arteries. Synonym: bifurcatio trunci pulmonalis. (05 Mar 2000) |
| bifurcation of trachea | The division of the trachea into the right and left main bronchi; it occurs at the level of the fifth or sixth thoracic vertebral body and is marked internally by the presence of a carina or keel-like ridge between the diverging bronchi. Synonym: bifurcatio tracheae. (05 Mar 2000) |